build(android): add google services and update NDK version

Configure Firebase/Google Services support for Android and update the CI
build pipeline to use a newer NDK version.

- Add `google-services.json` and configure `googleServicesFile` in `app.json`
- Add `com.google.gms:google-services:4.4.4` classpath to build workflow
- Update Android NDK version from `27.0.12077973` to `27.1.12297006` in CI cache and installation steps

google-services.json

@@ -0,0 +1,23 @@
+{
+  "project_info": {
+    "project_number": "000000000000",
+    "project_id": "withyou-dummy",
+    "storage_bucket": "withyou-dummy.appspot.com"
+  },
+  "client": [
+    {
+      "client_info": {
+        "mobilesdk_app_id": "1:000000000000:android:0000000000000000",
+        "android_client_info": {
+          "package_name": "cn.qczlit.withyou"
+        }
+      },
+      "api_key": [
+        {
+          "current_key": "AIzaSyDummyKeyForFirebaseInitOnly"
+        }
+      ]
+    }
+  ],
+  "configuration_version": "1"
+}