build: add build and release pipeline

Author: suniala

.github/workflows/build.yml

@@ -0,0 +1,33 @@
+name: Build and publish
+
+on:
+  workflow_dispatch:
+  push:
+
+jobs:
+  build-and-test:
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v3
+
+    - name: Set up JDK
+      uses: actions/setup-java@v3
+      with:
+        java-version: '11'
+        distribution: 'adopt'
+        architecture: x64
+
+    - name: Grant execute permission for gradlew
+      run: chmod +x gradlew
+
+    - name: Build and test
+      run: ./gradlew check build
+
+    - name: Release
+      uses: softprops/action-gh-release@v2
+      if: startsWith(github.ref, 'refs/tags/')
+      with:
+        files: |
+          ./decoder/build/libs/java-midi-decoder-*.jar
+          ./app/build/libs/app.jar