Configure Github Actions to run unit tests

.github/workflows/android-tests.yml

@@ -0,0 +1,25 @@
+name: Android Tests
+on:
+  push:
+    branches: [ "master" ]
+    paths-ignore:
+      - 'README.md'
+  pull_request:
+    branches: [ "master" ]
+jobs:
+  tests:
+    runs-on: macos-latest
+    steps:
+      - name: Repository checkout
+        uses: actions/checkout@v3
+      - name: set up JDK 1.8
+        uses: actions/setup-java@v1
+        with:
+          java-version: 1.8
+      - name: Run connected tests
+        uses: ReactiveCircus/android-emulator-runner@v2
+        with:
+         api-level: 23
+         target: google_apis
+         arch: x86_64
+         script: ./gradlew connectedCheck