chore: add release sdk action (#7)

.github/workflows/release-sdk.yaml

@@ -0,0 +1,55 @@
+name: Release an SDK to Maven Central
+
+on:
+  workflow_dispatch:
+    inputs:
+      version:
+        description: |
+          The version to release.
+          Add -SNAPSHOT to release a snapshot version.
+        required: true
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-java@v4
+        with:
+          java-version: 21
+          distribution: 'temurin'
+          server-id: oss-sonatype
+          server-username: SONATYPE_USERNAME
+          server-password: SONATYPE_PASSWORD
+          gpg-private-key: ${{ secrets.GPG_PRIVATE_KEY }}
+          gpg-passphrase: GPG_PASSPHRASE
+          settings-path: ${{ github.workspace }}
+
+      - name: Prepare Environment and Version
+        id: prepare
+        run: |
+          git config user.name s-github-actions
+          git config user.email [email protected]
+          echo "branch_name=release/${{ inputs.version }}" >> $GITHUB_OUTPUT
+
+      - name: Prepare Release
+        id: prepare_release
+        run: |
+          cd code
+          git checkout -b ${{ steps.prepare.outputs.branch_name }}
+          chmod a+x ../gradlew && ../gradlew --no-daemon versionsSet -Pversion=${{ inputs.version }}
+          git add gradle.properties ../gradlew
+          git commit -m "chore: prepare release ${{ inputs.version }}"
+          git push --set-upstream origin ${{ steps.prepare.outputs.branch_name }}
+
+      - name: Build and Publish
+        env:
+          ARTYLAB_USER: ${{ secrets.SONATYPE_USERNAME }}
+          ARTYLAB_PASSWORD: ${{ secrets.SONATYPE_PASSWORD }}
+          GPG_PASSPHRASE: ${{ secrets.GPG_PRIVATE_KEY_PASSPHRASE }}
+        run: |
+          echo "Publishing version ${{ inputs.version }}"
+          cd code
+          ../gradlew --no-daemon clean jar build publish -Pversion=${{ inputs.version }}