feat: 发布4×4候选与Android手表应用内键盘组件

android/.gitignore

@@ -0,0 +1,13 @@
+.gradle/
+local.properties
+build/
+app/build/
+keyboard/src/main/assets/dictionary.db
+artifacts/
+release-signing.properties
+*.jks
+*.keystore
+**/__pycache__/
+
+keyboard/build/
+host/build/