Prepare release workflow

.github/workflows/release.yaml

@@ -0,0 +1,25 @@
+name: Release
+
+on:
+  release:
+    types: [ published ]
+
+jobs:
+  publish-release:
+    runs-on: ubuntu-latest
+    if: github.repository == 'SimonScholz/qr-code-with-logo' && github.ref == 'refs/heads/main'
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-java@v3
+        with:
+          distribution: 'temurin'
+          java-version: 20
+
+      - uses: gradle/gradle-build-action@v2.9.0
+
+      - name: Publish Artifacts
+        run: ./gradlew publishAllPublicationsToMavenCentral --no-configuration-cache
+        env:
+          ORG_GRADLE_PROJECT_mavenCentralUsername: ${{ secrets.SONATYPE_USERNAME }}
+          ORG_GRADLE_PROJECT_mavenCentralPassword: ${{ secrets.SONATYPE_PASSWORD }}