feat: Implement native Android MediaSession and foreground service for TTS playback

- Add `ReaderTtsMediaService` to handle background playback, media controls, and notifications on Android
- Integrate `MediaSessionCompat` to support external media controls and lock screen integration
- Add `ReaderTtsMediaBridge` for synchronized state communication between Kotlin and Flutter
- Update `TtsNotifier` to use the native Android service when available, with a fallback for other platforms
- Implement sentence-level highlighting and tapping to start reading from a specific location
- Update Android manifest with necessary permissions for foreground services and notifications
- Adjust TTS speech rate constants and improve playback health monitoring and recovery logic

android/app/google-services.json

@@ -5,43 +5,6 @@
     "storage_bucket": "reader-1658c.firebasestorage.app"
   },
   "client": [
-    {
-      "client_info": {
-        "mobilesdk_app_id": "1:308259929553:android:9142ae16d9ddd8a91c34f0",
-        "android_client_info": {
-          "package_name": "com.example.reader_app"
-        }
-      },
-      "oauth_client": [
-        {
-          "client_id": "308259929553-7cdc4g8fe7os799trig7hk7ugkuansov.apps.googleusercontent.com",
-          "client_type": 1,
-          "android_info": {
-            "package_name": "com.example.reader_app",
-            "certificate_hash": "f7e9f7ec9bafd1de69934b2c9b52ee491d73bad7"
-          }
-        },
-        {
-          "client_id": "308259929553-9oame596io3s4lcj9cdb5db6v3i6f6rk.apps.googleusercontent.com",
-          "client_type": 3
-        }
-      ],
-      "api_key": [
-        {
-          "current_key": "AIzaSyBibgTrvBWtJBL4PGeIyahBwRlYKcjQ47k"
-        }
-      ],
-      "services": {
-        "appinvite_service": {
-          "other_platform_oauth_client": [
-            {
-              "client_id": "308259929553-9oame596io3s4lcj9cdb5db6v3i6f6rk.apps.googleusercontent.com",
-              "client_type": 3
-            }
-          ]
-        }
-      }
-    },
     {
       "client_info": {
         "mobilesdk_app_id": "1:308259929553:android:14f7828b9b9ca9d31c34f0",
@@ -50,6 +13,22 @@
         }
       },
       "oauth_client": [
+        {
+          "client_id": "308259929553-fd8teopc4chi2jjd8kr5vn9inn35ar6j.apps.googleusercontent.com",
+          "client_type": 1,
+          "android_info": {
+            "package_name": "dev.fevirtus.reader",
+            "certificate_hash": "fa21a3e6a319b71b2dd0ef9573b22046dba5d55c"
+          }
+        },
+        {
+          "client_id": "308259929553-kdfvnu11cq6k9a2l1b3gtrmfmtsggduk.apps.googleusercontent.com",
+          "client_type": 1,
+          "android_info": {
+            "package_name": "dev.fevirtus.reader",
+            "certificate_hash": "f7e9f7ec9bafd1de69934b2c9b52ee491d73bad7"
+          }
+        },
         {
           "client_id": "308259929553-9oame596io3s4lcj9cdb5db6v3i6f6rk.apps.googleusercontent.com",
           "client_type": 3