chore: added GitHub flow integration

Author: kikoso

.github/workflows/test.yml

@@ -1,4 +1,4 @@
-# Copyright 2020 Google LLC
+# Copyright 2024 Google LLC
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -45,3 +45,6 @@ jobs:
 
     - name: Build modules
       run: ./gradlew build jacocoTestReport --stacktrace
+
+    - name: Run Screenshot Tests
+      run: ./gradlew validateDebugScreenshotTest