ci: Added CI building

Signed-off-by: Gabriel Fontán <[email protected]>

.github/workflows/android_ci.yml

@@ -0,0 +1,30 @@
+# From https://github.com/JunkFood02/Seal
+name: Android CI
+
+on:
+  pull_request:
+    branches: [ "main" ]
+
+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: Setup Android SDK
+        uses: android-actions/setup-android@v3
+
+      - uses: gradle/actions/setup-gradle@v3
+      - name: Grant execute permission for gradlew
+        run: chmod +x gradlew
+      - name: Build with Gradle
+        run: ./gradlew build