Add Android CI workflow for building with Gradle

.github/workflows/android.yml

@@ -0,0 +1,26 @@
+name: Android CI
+
+on:
+  push:
+    branches: [ "master" ]
+  pull_request:
+    branches: [ "master" ]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v4
+    - name: set up JDK 11
+      uses: actions/setup-java@v4
+      with:
+        java-version: '11'
+        distribution: 'temurin'
+        cache: gradle
+
+    - name: Grant execute permission for gradlew
+      run: chmod +x gradlew
+    - name: Build with Gradle
+      run: ./gradlew build

azure-pipelines.yml

@@ -0,0 +1,19 @@
+9# Starter pipeline
+# Start with a minimal pipeline that you can customize to build and deploy your code.
+# Add steps that build, run tests, deploy, and more:
+# https://aka.ms/yaml
+
+trigger:
+- master
+
+pool:
+  vmImage: ubuntu-latest
+
+steps:
+- script: echo Hello, world!
+  displayName: 'Run a one-line script'
+
+- script: |
+    echo Add other tasks to build, test, and deploy your project.
+    echo See https://aka.ms/yaml
+  displayName: 'Run a multi-line script'