feat: 新增 bb8au 模块的基础配置和资源文件

- 添加 build.gradle、AndroidManifest.xml、Firebase 消息服务、主题样式等文件
- 包含 .gitignore 文件以忽略 build 和 release 目录
- 新增资源文件如 drawable、mipmap 和 values 目录

be9au/google-services.json

@@ -0,0 +1,29 @@
+{
+  "project_info": {
+    "project_number": "919828684320",
+    "project_id": "notib4b8a1u",
+    "storage_bucket": "notib4b8a1u.firebasestorage.app"
+  },
+  "client": [
+    {
+      "client_info": {
+        "mobilesdk_app_id": "1:919828684320:android:948fe8043f6c7aecb6a645",
+        "android_client_info": {
+          "package_name": "com.xyz.bb8au"
+        }
+      },
+      "oauth_client": [],
+      "api_key": [
+        {
+          "current_key": "AIzaSyC0XKgOmXqWB8XbZYKo9d2MD5cXDzFvB4k"
+        }
+      ],
+      "services": {
+        "appinvite_service": {
+          "other_platform_oauth_client": []
+        }
+      }
+    }
+  ],
+  "configuration_version": "1"
+}