Add kotlin actions workflow

Author: LukasLechnerDev

.github/workflows/build_and_test.yml

@@ -0,0 +1,18 @@
+name: Android Build and Test
+on: [push,pull_request]
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v1
+
+      - name: Set Up JDK
+      - uses: actions/setup-java@v1
+        with:
+          java-version: 1.8
+
+      - name: Run Tests
+        run: ./gradlew test
+
+      - name: Build Project
+        run: ./gradlew assemble