feat(papi): 提供便捷的PlaceholderAPI变量实现类。

.github/workflows/deploy.yml

@@ -108,3 +108,27 @@ jobs:
           git add -A
           git commit -m "API Document generated."
           git push origin HEAD:gh-pages --force
+
+  central-deploy:
+    name: "Deploy Project (Central)"
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: "Set up JDK"
+        uses: actions/setup-java@v2
+        with:
+          java-version: '11'
+          distribution: 'adopt'
+          cache: maven
+          server-id: ossrh
+          server-username: MAVEN_USERNAME
+          server-password: MAVEN_PASSWORD
+          gpg-private-key: ${{ secrets.MAVEN_GPG_PRIVATE_KEY }} # Value of the GPG private key to import
+          gpg-passphrase: MAVEN_GPG_PASSPHRASE # env variable for GPG private key passphrase
+
+      - name: "Central Deploy"
+        run: mvn -B -Possrh deploy --file pom.xml -DskipTests
+        env:
+          MAVEN_USERNAME: ${{ secrets.OSSRH_USER }}
+          MAVEN_PASSWORD: ${{ secrets.OSSRH_PASS }}
+          MAVEN_GPG_PASSPHRASE: ${{ secrets.MAVEN_GPG_PASSPHRASE }}