Add auto-release for packaging new .exe

.github/workflows/release.yml

@@ -0,0 +1,33 @@
+name: Maven Package and Release osci-render
+
+on:
+  push:
+    branches: [ release ]
+
+jobs:
+  build:
+
+    runs-on: windows-latest
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: Set up JDK 15
+      uses: actions/setup-java@v2
+      with:
+        java-version: '15'
+        distribution: 'adopt'
+    - name: Build with Maven
+      run: |
+        mvn -B package
+        $version= mvn help:evaluate -Dexpression="project.version" -q -DforceStdout
+        echo "VERSION=$version" >> $env:GITHUB_ENV
+        echo "Release version $version" > ${{ github.workflow }}-CHANGELOG.txt
+    - name: Release
+      uses: softprops/action-gh-release@v1
+      with:
+        body_path: ${{ github.workflow }}-CHANGELOG.txt
+        tag_name: v${{ env.VERSION }}
+        files: target/osci-render-${{ env.VERSION }}.exe
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        GITHUB_REPOSITORY: jameshball/osci-render