feat: update CI

.github/workflows/ci.yaml

@@ -0,0 +1,33 @@
+name: Build RMusic
+on:
+  - push
+  - pull_request
+jobs:
+  build:
+    strategy:
+      matrix:
+        java:
+          - 17
+        os:
+          - ubuntu-latest
+    runs-on: ${{ matrix.os }}
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v2
+      - name: Validate gradle wrapper
+        uses: gradle/wrapper-validation-action@v1
+      - name: Setup jdk ${{ matrix.java }}
+        uses: actions/setup-java@v1
+        with:
+          java-version: ${{ matrix.java }}
+      - name: Make Gradle wrapper executable
+        if: ${{ runner.os != 'Windows' }}
+        run: chmod +x ./gradlew
+      - name: Build
+        run: ./gradlew build
+      - name: Upload build artifacts
+        if: ${{ runner.os == 'Linux' && matrix.java == '17' }}
+        uses: actions/upload-artifact@v2
+        with:
+          name: RMusic
+          path: build/libs/*.jar