Add CI workflows for `test` workspace #8767

Job	Run time
Prepare	5s
Generate relay list	1m 22s
Build native (x86_64, x86_64, x86_64-linux-android)	3m 30s
Build native (i686, x86, i686-linux-android)	3m 34s
Build native (aarch64, arm64-v8a, aarch64-linux-android)	3m 43s
Build native (armv7, armeabi-v7a, armv7-linux-androideabi)	3m 41s
Build app and run unit tests	9m 28s
Run instrumented tests (app)	4m 54s
Run instrumented tests (mockapi)	1m 13s
Run instrumented firebase tests	0s
	31m 30s

Provide feedback