Add release github workflow

Signed-off-by: Heiko Kiesel <heiko.kiesel@iteratec.com>

Author: Heiko Kiesel

.github/workflows/release.yml

@@ -0,0 +1,36 @@
+# SPDX-FileCopyrightText: 2023 iteratec GmbH
+#
+# SPDX-License-Identifier: Apache-2.0
+
+# This workflow will build a Java project with Gradle
+# For more information see: https://help.github.com/actions/language-and-framework-guides/building-and-testing-java-with-gradle
+
+name: Publish Release to Maven Central
+
+on:
+  release:
+    types: [published]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Set up JDK 17
+        uses: actions/setup-java@v1
+        with:
+          java-version: 17
+      - name: Grant execute permission for gradlew
+        run: chmod +x gradlew
+      - name: Build with Gradle
+        run: ./gradlew sign
+        env:
+          DD_CLIENT_VERSION: ${{ github.event.release.tag_name }}
+          SIGNING_KEY: ${{ secrets.SIGNING_KEY }}
+          SIGNING_PASSWORD: ${{ secrets.SIGNING_PASSWORD }}
+      - name: Publish to Maven Central
+        env:
+          MAVEN_USERNAME: ${{ secrets.MAVEN_USERNAME }}
+          MAVEN_PASSWORD: ${{ secrets.MAVEN_PASSWORD }}
+          DD_CLIENT_VERSION: ${{ github.event.release.tag_name }}
+        run: ./gradlew publish