feat: add link to website with documentation (#2545)

Author: marcnause

app/src/main/java/io/pslab/activity/MainActivity.java

@@ -273,6 +273,12 @@ public boolean onNavigationItemSelected(@NonNull MenuItem item) {
                         navItemIndex = 5;
                         CURRENT_TAG = TAG_ABOUTUS;
                         break;
+                    case R.id.nav_documentation:
+                        customTabService.launchUrl("https://docs.pslab.io/");
+                        if (drawer != null) {
+                            drawer.closeDrawers();
+                        }
+                        break;
                     case R.id.nav_rate:
                         customTabService.launchUrl("https://play.google.com/store/apps/details?id=io.pslab");
                         if (drawer != null) {

app/src/main/res/drawable/baseline_menu_book_24.xml

@@ -0,0 +1,11 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android" android:autoMirrored="true" android:height="24dp" android:tint="#000000" android:viewportHeight="24" android:viewportWidth="24" android:width="24dp">
+      
+    <path android:fillColor="@android:color/white" android:pathData="M21,5c-1.11,-0.35 -2.33,-0.5 -3.5,-0.5c-1.95,0 -4.05,0.4 -5.5,1.5c-1.45,-1.1 -3.55,-1.5 -5.5,-1.5S2.45,4.9 1,6v14.65c0,0.25 0.25,0.5 0.5,0.5c0.1,0 0.15,-0.05 0.25,-0.05C3.1,20.45 5.05,20 6.5,20c1.95,0 4.05,0.4 5.5,1.5c1.35,-0.85 3.8,-1.5 5.5,-1.5c1.65,0 3.35,0.3 4.75,1.05c0.1,0.05 0.15,0.05 0.25,0.05c0.25,0 0.5,-0.25 0.5,-0.5V6C22.4,5.55 21.75,5.25 21,5zM21,18.5c-1.1,-0.35 -2.3,-0.5 -3.5,-0.5c-1.7,0 -4.15,0.65 -5.5,1.5V8c1.35,-0.85 3.8,-1.5 5.5,-1.5c1.2,0 2.4,0.15 3.5,0.5V18.5z"/>
+      
+    <path android:fillColor="@android:color/white" android:pathData="M17.5,10.5c0.88,0 1.73,0.09 2.5,0.26V9.24C19.21,9.09 18.36,9 17.5,9c-1.7,0 -3.24,0.29 -4.5,0.83v1.66C14.13,10.85 15.7,10.5 17.5,10.5z"/>
+      
+    <path android:fillColor="@android:color/white" android:pathData="M13,12.49v1.66c1.13,-0.64 2.7,-0.99 4.5,-0.99c0.88,0 1.73,0.09 2.5,0.26V11.9c-0.79,-0.15 -1.64,-0.24 -2.5,-0.24C15.8,11.66 14.26,11.96 13,12.49z"/>
+      
+    <path android:fillColor="@android:color/white" android:pathData="M17.5,14.33c-1.7,0 -3.24,0.29 -4.5,0.83v1.66c1.13,-0.64 2.7,-0.99 4.5,-0.99c0.88,0 1.73,0.09 2.5,0.26v-1.52C19.21,14.41 18.36,14.33 17.5,14.33z"/>
+    
+</vector>

app/src/main/res/menu/activity_main_drawer.xml

@@ -37,6 +37,11 @@
             android:checkable="true"
             android:icon="@drawable/ic_info_black_24dp"
             android:title="@string/nav_about_us" />
+        <item
+            android:id="@+id/nav_documentation"
+            android:checkable="true"
+            android:icon="@drawable/baseline_menu_book_24"
+            android:title="@string/nav_documentation" />
         <item
             android:id="@+id/nav_rate"
             android:checkable="true"

app/src/main/res/values/strings.xml

@@ -10,6 +10,7 @@
     <string name="nav_instruments">Instruments</string>
     <string name="nav_settings">Settings</string>
     <string name="nav_about_us">About Us</string>
+    <string name="nav_documentation">Documentation</string>
     <string name="nav_buy_pslab">Buy PSLab</string>
     <string name="nav_report">Feedback &amp; Bugs</string>
     <string name="nav_help_feedback">FAQ</string>