Add github release workflow

Author: NicklasWallgren

.github/workflows/release.yml

@@ -0,0 +1,29 @@
+on:
+  release:
+    types:
+      - created
+name: release
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Set up JDK 21
+        uses: actions/setup-java@v2
+        with:
+          java-version: '21'
+          distribution: 'adopt'
+
+      - name: Validate Gradle wrapper
+        uses: gradle/wrapper-validation-action@e6e38bacfdf1a337459f332974bb2327a31aaf4b
+
+      - name: Set env
+        run: echo "RELEASE_VERSION=${GITHUB_REF#refs/*/}" >> $GITHUB_ENV
+
+      - name: Build with Gradle
+        env:
+          ORG_GRADLE_PROJECT_mavenCentralUsername: ${{ secrets.ORG_GRADLE_PROJECT_mavenCentralUsername }}
+          ORG_GRADLE_PROJECT_mavenCentralPassword: ${{ secrets.ORG_GRADLE_PROJECT_mavenCentralPassword }}
+          ORG_GRADLE_PROJECT_signingInMemoryKey: ${{ secrets.ORG_GRADLE_PROJECT_signingInMemoryKey }}
+          ORG_GRADLE_PROJECT_signingInMemoryKeyId: ${{ secrets.ORG_GRADLE_PROJECT_signingInMemoryKeyId }}
+        run: ./gradlew publishToMavenCentral --no-configuration-cache -Pversion=${{ env.RELEASE_VERSION }}