Create build workflow

Author: stringfromjava

.github/workflows/ci.yaml

@@ -0,0 +1,37 @@
+name: CI Build Check
+
+on:
+  push:
+    branches: [ main, develop ]
+  pull_request:
+    branches: [ main, develop ]
+
+jobs:
+  build:
+    strategy:
+      matrix:
+        os: [windows-latest, macos-latest, ubuntu-latest]
+
+    runs-on: ${{ matrix.os }}
+    
+    steps:
+      - uses: actions/checkout@v4
+      
+      # LibGDX typically uses Java 11 or newer
+      - name: Set up JDK 17
+        uses: actions/setup-java@v4
+        with:
+          java-version: '17'
+          distribution: 'temurin'
+          # Cache Gradle dependencies to speed up subsequent runs
+          cache: 'gradle'
+
+      # Grant execute permission for gradlew (necessary for macOS and Linux)
+      - name: Grant execute permission for gradlew
+        run: chmod +x gradlew
+        # Use an 'if' condition to only run this on non-Windows OS
+        if:  startsWith(runner.os, 'macOS') || startsWith(runner.os, 'Linux')
+        
+      # This task compiles all modules (core, desktop, etc.)
+      - name: Build with Gradle
+        run: ./gradlew build