Add CI workflow

Author: Wavesonics

.github/workflows/build.yml

@@ -0,0 +1,39 @@
+name: Build and Test
+
+on:
+  push:
+    branches: [ "**" ]
+  pull_request:
+    branches: [ "**" ]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up JDK 17
+        uses: actions/setup-java@v3
+        with:
+          java-version: '17'
+          distribution: 'temurin'
+          cache: gradle
+
+      - name: Grant execute permission for gradlew
+        run: chmod +x gradlew
+
+      - name: Build with Gradle
+        run: ./gradlew build
+
+      - name: Run Unit Tests
+        run: ./gradlew test
+    
+      - name: Run Instrumentation Tests
+        uses: reactivecircus/android-emulator-runner@v2
+        with:
+          api-level: 35
+          target: default
+          arch: x86_64
+          profile: Nexus 6
+          script: ./gradlew connectedCheck