feat: Fix gradle build, update fastlane configuration

android/fastlane/Fastfile

@@ -17,23 +17,37 @@ default_platform(:android)
 
 platform :android do
   desc "Runs all the tests"
-  
   lane :test do
     gradle(task: "test")
   end
 
-  desc "Submit a new Beta Build to Crashlytics Beta"
+  desc "Submit a new beta build to Google Play"
   lane :beta do
-    gradle(task: "clean assembleRelease")
-    crashlytics
-  
-    # sh "your_script.sh"
-    # You can also use other beta testing services here
+    sh "flutter build appbundle -v"
+    upload_to_play_store(
+      track: 'beta',
+      aab: '../build/app/outputs/bundle/release/app-release.aab',
+      json_key_data: ENV['PLAY_STORE_CREDENTIALS'],
+    )
   end
 
-  desc "Deploy a new version to the Google Play"
-  lane :deploy do
-    gradle(task: "clean assembleRelease")
-    upload_to_play_store
+  desc "Promote beta track to prod"
+  lane :promote_to_production do
+    upload_to_play_store(
+      track: 'beta',
+      track_promote_to: 'production',
+      skip_upload_changelogs: true,
+      json_key_data: ENV['PLAY_STORE_CREDENTIALS'],
+    )
   end
-end
+
+  desc "Submit a new production build to Google Play"
+  lane :production do
+    sh "flutter build appbundle -v"
+    upload_to_play_store(
+      track: 'production',
+      aab: '../build/app/outputs/bundle/release/app-release.aab',
+      json_key_data: ENV['PLAY_STORE_CREDENTIALS'],
+    )
+  end
+end