feat(ui): navigation menu bottom sheet + Logcat + Settings

- Port MikuRay/NekoBox particle-animation package (com.neko.particlesdrawable)
  and add a NekoBox-style navigation bottom sheet with an animated particle
  banner, an app-settings row, and a tools/info badge row.
- Add a functional in-app Logcat viewer (read/clear the app log).
- Add a Settings screen (theme mode, particle-animation toggle, start-on-boot,
  MTU) backed by AppSettings + existing stores; apply the theme app-wide via a
  new MikuApp Application.
- Home header opens the menu; translate all new strings for zh-rCN/zh-rTW/in/ru.

Author: HSSkyBoy

app/src/main/AndroidManifest.xml

@@ -9,6 +9,7 @@
     <uses-permission android:name="android.permission.WAKE_LOCK" />
 
     <application
+        android:name=".MikuApp"
         android:allowBackup="true"
         android:icon="@mipmap/ic_launcher"
         android:label="@string/app_name"
@@ -30,6 +31,16 @@
             android:exported="false"
             android:parentActivityName=".ui.MainActivity" />
 
+        <activity
+            android:name=".ui.LogcatActivity"
+            android:exported="false"
+            android:parentActivityName=".ui.MainActivity" />
+
+        <activity
+            android:name=".ui.SettingsActivity"
+            android:exported="false"
+            android:parentActivityName=".ui.MainActivity" />
+
         <activity
             android:name=".service.VpnRequestActivity"
             android:exported="false"

app/src/main/java/com/neko/particlesdrawable/CanvasParticlesView.java

@@ -0,0 +1,69 @@
+/*
+ * Copyright (C) 2017 Yaroslav Mytkalyk
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.neko.particlesdrawable;
+
+import android.graphics.Canvas;
+import android.graphics.ColorFilter;
+import android.graphics.Paint;
+
+import androidx.annotation.ColorInt;
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+
+/**
+ * {@link IParticlesView} that draws on {@link Canvas}
+ */
+final class CanvasParticlesView implements IParticlesView {
+
+    private final Paint mPaint = new Paint(Paint.ANTI_ALIAS_FLAG | Paint.DITHER_FLAG);
+
+    @Nullable
+    private Canvas mCanvas;
+
+    void setCanvas(@Nullable final Canvas canvas) {
+        mCanvas = canvas;
+    }
+
+    @NonNull
+    Paint getPaint() {
+        return mPaint;
+    }
+
+    void setColorFilter(final ColorFilter colorFilter) {
+        mPaint.setColorFilter(colorFilter);
+    }
+
+    @Override
+    public void drawLine(final float startX, final float startY, final float stopX,
+            final float stopY, final float strokeWidth, @ColorInt final int color) {
+        if (mCanvas == null) {
+            throw new IllegalStateException("Called in wrong state");
+        }
+        mPaint.setStrokeWidth(strokeWidth);
+        mPaint.setColor(color);
+        mCanvas.drawLine(startX, startY, stopX, stopY, mPaint);
+    }
+
+    @Override
+    public void fillCircle(final float cx, final float cy, final float radius,
+            @ColorInt final int color) {
+        if (mCanvas == null) {
+            throw new IllegalStateException("Called in wrong state");
+        }
+        mPaint.setColor(color);
+        mCanvas.drawCircle(cx, cy, radius, mPaint);
+    }
+}

app/src/main/java/com/neko/particlesdrawable/Defaults.java

@@ -0,0 +1,48 @@
+/*
+ * Copyright (C) 2017 Yaroslav Mytkalyk
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.neko.particlesdrawable;
+
+import android.content.res.Resources;
+import android.graphics.Color;
+import android.util.TypedValue;
+
+import androidx.annotation.ColorInt;
+
+/**
+ * Default values are here.
+ */
+final class Defaults {
+
+    private Defaults() {
+        throw new UnsupportedOperationException();
+    }
+
+    static final int DEFAULT_DOT_NUMBER = 60;
+    static final float DEFAULT_MAX_DOT_RADIUS = TypedValue.applyDimension(
+            TypedValue.COMPLEX_UNIT_DIP, 3f, Resources.getSystem().getDisplayMetrics());
+    static final float DEFAULT_MIN_DOT_RADIUS = TypedValue.applyDimension(
+            TypedValue.COMPLEX_UNIT_DIP, 1f, Resources.getSystem().getDisplayMetrics());
+    static final float DEFAULT_LINE_THICKNESS = TypedValue.applyDimension(
+            TypedValue.COMPLEX_UNIT_DIP, 1, Resources.getSystem().getDisplayMetrics());
+    @ColorInt
+    static final int DEFAULT_DOT_COLOR = Color.WHITE;
+    @ColorInt
+    static final int DEFAULT_LINE_COLOR = Color.WHITE;
+    static final float DEFAULT_LINE_DISTANCE = TypedValue.applyDimension(
+            TypedValue.COMPLEX_UNIT_DIP, 86, Resources.getSystem().getDisplayMetrics());
+    static final float DEFAULT_STEP_MULTIPLIER = 1f;
+    static final int DEFAULT_DELAY = 10;
+}

app/src/main/java/com/neko/particlesdrawable/IParticlesView.java

@@ -0,0 +1,29 @@
+/*
+ * Copyright (C) 2017 Yaroslav Mytkalyk
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.neko.particlesdrawable;
+
+import androidx.annotation.ColorInt;
+
+/**
+ * Particles View
+ */
+interface IParticlesView {
+
+    void drawLine(float startX, float startY, float stopX, float stopY, float strokeWidth,
+            @ColorInt int color);
+
+    void fillCircle(float cx, float cy, float radius, @ColorInt int color);
+}

app/src/main/java/com/neko/particlesdrawable/Particle.java

@@ -0,0 +1,52 @@
+/*
+ * Copyright (C) 2017 Yaroslav Mytkalyk
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.neko.particlesdrawable;
+
+/**
+ * Represents a Particle by holding x and y coordinates, travel direction and step multiplier
+ */
+final class Particle {
+
+    /**
+     * Direction cosine
+     */
+    float dCos;
+
+    /**
+     * Direction sine
+     */
+    float dSin;
+
+    /**
+     * Current X
+     */
+    float x;
+
+    /**
+     * Current Y
+     */
+    float y;
+
+    /**
+     * Step multiplier for this dot
+     */
+    float stepMultiplier;
+
+    /**
+     * Radius multiplier for this dot
+     */
+    float radius;
+}