use the meteor built-in updater

(click on the name in title screen credits)

Author: C10udburst

build.gradle

@@ -35,7 +35,7 @@ processResources {
         expand "version": project.version
 
         filter { line -> line.replace("@mc_version@", project.minecraft_version) }
-		filter { line -> line.replace("@gh_hash@", System.getenv("GITHUB_SHA") ?: "unknown") }
+		filter { line -> line.replace("@gh_hash@", System.getenv("GITHUB_SHA") ?: "") }
     }
 }
 

src/main/java/anticope/tanuki/Tanuki.java

@@ -1,6 +1,7 @@
 package anticope.tanuki;
 
 import meteordevelopment.meteorclient.MeteorClient;
+import meteordevelopment.meteorclient.addons.GithubRepo;
 import meteordevelopment.meteorclient.addons.MeteorAddon;
 import meteordevelopment.meteorclient.systems.Systems;
 import meteordevelopment.meteorclient.systems.hud.HUD;
@@ -9,6 +10,8 @@
 import java.lang.invoke.MethodHandles;
 import anticope.tanuki.modules.*;
 import anticope.tanuki.modules.hud.*;
+
+import net.fabricmc.loader.api.FabricLoader;
 import net.minecraft.item.Items;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -43,4 +46,25 @@ public void onInitialize() {
 	public void onRegisterCategories() {
 		Modules.registerCategory(CATEGORY);
 	}
+
+	@Override
+    public String getWebsite() {
+        return "https://github.com/AntiCope/tanuki";
+    }
+
+    @Override
+    public GithubRepo getRepo() {
+        return new GithubRepo("AntiCope", "tanuki");
+    }
+
+    @Override
+    public String getCommit() {
+        String commit = FabricLoader
+            .getInstance()
+            .getModContainer("tanuki")
+            .get().getMetadata()
+            .getCustomValue("github:sha")
+            .getAsString();
+        return commit.isEmpty() ? null : commit.trim();
+    }
 }

src/main/java/anticope/tanuki/mixin/TitleScreenMixin.java

@@ -9,7 +9,7 @@
     "Cloudburst"
   ],
   "contact": {
-    "repo": "https://github.com/MeteorDevelopment/meteor-addon-template"
+    "repo": "https://github.com/AntiCope/tanuki"
   },
   "icon": "assets/tanuki/icon.png",
   "environment": "client",
@@ -23,7 +23,7 @@
   ],
   "custom": {
     "meteor-client:color": "230,128,139",
-    "updater:sha": "@gh_hash@"
+    "github:sha": "@gh_hash@"
   },
   "depends": {
     "java": ">=17",

src/main/java/anticope/tanuki/utils/UpdateUtil.java

@@ -5,7 +5,6 @@
   "client": [
     "ClientPlayerEntityMixin",
     "TotemParticleMixin",
-    "TitleScreenMixin",
     "meteor.CrystalAuraAccessor",
     "meteor.ProfileMixin"
   ],