Add publish maven ci

Author: qianmoQ

.github/workflows/publish-maven.yml

@@ -0,0 +1,25 @@
+name: Publish jar via Maven Central
+
+on:
+  release:
+    types: [ published ]
+
+jobs:
+  release:
+    runs-on: ubuntu-18.04
+    steps:
+      - name: Check out Git repository
+        uses: actions/checkout@v2
+
+      - name: Install Java and Maven
+        uses: actions/setup-java@v1
+        with:
+          java-version: 8
+
+      - name: Release Maven package
+        uses: samuelmeuli/action-maven-publish@v1
+        with:
+          gpg_private_key: ${{ secrets.GPG_SECRET }}
+          gpg_passphrase: ${{ secrets.GPG_PASSWORD }}
+          nexus_username: ${{ secrets.OSSRH_USER }}
+          nexus_password: ${{ secrets.OSSRH_PASSWORD }}