Update firebase emulator data and add github action for Android e2e tests

[andreia-ferreira]

Towards: google/ground-android#3365

To make Android end to end tests reliable and self-contained, we need to pre-populate the Firebase emulator with a dedicated test survey. This PR adds a new folder with this test data test-android and a new command nx start-android-test-data to launch an emulator based on this data.

A separate github action was also added in order to run this from the ground-android repo

[andreia-ferreira]

I see that this has been removed in #2338 but it's needed for running the android project with the local firebase emulator so I'm re-adding it here. @gino-m could you please confirm if this is ok?

[gino-m]

Are you sure it's needed? Isn't auth disabled in the local version? I can't see how it would work today, since we never set up a test account in the auth emulator.

[andreia-ferreira]

without this the Android app crashes with : com.google.firebase.FirebaseException: An internal error has occurred. [ Failed to connect to /10.0.2.2:9099 ]

The Android app needs FirebaseAuth to initialize successfully when running against the local emulator. For local builds we rely on anonymous sign-in, which still requires the auth emulator to be configured, which currently is done like this:

    val auth = FirebaseAuth.getInstance()
    if (USE_EMULATORS) {
      // Use the auth emulator so we can sign-in anonymously during dev.
      auth.useEmulator(EMULATOR_HOST, AUTH_EMULATOR_PORT)
    }

[gino-m]

Interesting.. I'm surprised it's needed for anonymous sign in. Sure, please re-enable it!