setup common workflows

.gitea/workflows/gradle-build.yaml

@@ -0,0 +1,37 @@
+name: Gradle build
+
+on:
+  workflow_call:
+    inputs:
+      BUILD_OPTION:
+        default: ""
+        description: "Gradle build option"
+        required: false
+        type: "string"
+      JAVA_DISTRIBUTION:
+        default: "temurin"
+        description: "Java distribution to use"
+        required: false
+        type: "string"
+      JAVA_VERSION:
+        default: "25"
+        description: "Java version to use"
+        required: false
+        type: "string"
+
+jobs:
+  gradle-build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout Repository
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 1
+          token: ${{ secrets.CI_BOT_TOKEN }}
+      - name: Set up JDK
+        uses: actions/setup-java@v4
+        with:
+          distribution: ${{ inputs.JAVA_DISTRIBUTION }}
+          java-version: ${{ inputs.JAVA_VERSION }}
+      - name: Run Gradle Build
+        run: ./gradlew build ${{ inputs.BUILD_OPTION }}