Add build action.

Author: vLuckyyy

.github/workflows/gradle.yml

@@ -0,0 +1,36 @@
+name: Java CI with Gradle
+
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        java:
+          - 17
+      fail-fast: false
+    steps:
+      - name: Checkout
+        uses: actions/[email protected]
+      - name: 'Set up JDK ${{ matrix.java }}'
+        uses: actions/[email protected]
+        with:
+          distribution: adopt
+          java-version: '${{ matrix.java }}'
+      - name: Cache Gradle
+        uses: actions/[email protected]
+        with:
+          path: ~/.gradle/caches
+          key: >-
+            ${{ runner.os }}-gradle-${{ hashFiles('**/*.gradle*',
+            '**/gradle-wrapper.properties') }}
+          restore-keys: '${{ runner.os }}-gradle-'
+      - name: Grant execute permission for gradlew
+        run: chmod +x gradlew
+      - name: Build the Jar
+        run: './gradlew clean build'