chore: prepare yanting monorepo handoff

android/.gitignore

@@ -0,0 +1,11 @@
+/.gradle
+/captures/
+/local.properties
+GeneratedPluginRegistrant.java
+.cxx/
+
+# Remember to never publicly share your keystore.
+# See https://flutter.dev/to/reference-keystore
+key.properties
+**/*.keystore
+**/*.jks