chore: add publish flow

Author: kikoso

.github/workflows/publish.yml

@@ -0,0 +1,38 @@
+name: Publish
+
+on:
+  release:
+    types: [published]
+
+jobs:
+  publish:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v5
+
+      - name: Set up JDK
+        uses: actions/setup-java@v4.7.1
+        with:
+          java-version: '21'
+          distribution: 'temurin'
+
+      - uses: gradle/actions/wrapper-validation@v4
+
+      - name: Publish to Maven Central
+        run: |
+          echo $GPG_KEY_ARMOR | base64 --decode > ./release.asc
+          gpg --quiet --output $GITHUB_WORKSPACE/release.gpg --dearmor ./release.asc
+
+          ./gradlew publishToMavenCentral --no-configuration-cache
+        env:
+          GPG_KEY_ARMOR: "${{ secrets.SYNCED_GPG_KEY_ARMOR }}"
+          GPG_KEY_ID: ${{ secrets.SYNCED_GPG_KEY_ID }}
+          GPG_PASSWORD: ${{ secrets.SYNCED_GPG_KEY_PASSWORD }}
+          SONATYPE_TOKEN_PASSWORD: ${{ secrets.SONATYPE_TOKEN_PASSWORD }}
+          SONATYPE_TOKEN_USERNAME: ${{ secrets.SONATYPE_TOKEN }}
+          mavenCentralUsername: ${{ secrets.SONATYPE_TOKEN }}
+          mavenCentralPassword: ${{ secrets.SONATYPE_TOKEN_PASSWORD }}
+          signing.keyId: ${{ secrets.SYNCED_GPG_KEY_ID }}
+          signing.password: ${{ secrets.SYNCED_GPG_KEY_PASSWORD }}
+          signing.secretKeyRingFile: ${{ github.workspace }}/release.gpg