Add deployment management for PowerNukkitX releases

.github/workflows/build.yml

@@ -1,5 +1,4 @@
 name: Build and Release
-
 on:
   workflow_dispatch:
   push:
@@ -10,10 +9,8 @@ on:
   pull_request:
     branches:
       - 'main'
-
 permissions:
   contents: write
-
 jobs:
   build-maven:
     runs-on: ubuntu-latest
@@ -22,38 +19,35 @@ jobs:
         uses: actions/checkout@v4
         with:
           fetch-depth: 0
-
       - name: Setup Java
         uses: actions/setup-java@v4
         with:
           distribution: 'temurin'
           java-version: '21'
-
+          server-id: powernukkitx-releases
+          server-username: PNX_REPO_USERNAME
+          server-password: PNX_REPO_PASSWORD
       - name: Build with Maven
         run: mvn -B package -DskipTests=false -Darguments="-Dmaven.javadoc.skip=true"
-
       - name: Verify artifact
         run: |
           if [ ! -f target/PlaceholderAPI.jar ]; then
             echo "target/PlaceholderAPI.jar was not created"
             exit 1
           fi
-
       - name: Read project version
         if: github.event_name == 'push'
         id: project
         run: |
           VERSION=$(mvn help:evaluate -Dexpression=project.version -q -DforceStdout)
           echo "version=$VERSION" >> "$GITHUB_OUTPUT"
           echo "tag=v$VERSION" >> "$GITHUB_OUTPUT"
-
       - name: Upload artifacts
         uses: actions/upload-artifact@v4
         if: success()
         with:
           name: PlaceholderAPI
           path: target/PlaceholderAPI.jar
-
       - name: Create GitHub release
         if: github.event_name == 'push'
         env:
@@ -64,9 +58,14 @@ jobs:
           else
             RELEASE_TAG="${{ steps.project.outputs.tag }}"
           fi
-
           if gh release view "$RELEASE_TAG" >/dev/null 2>&1; then
             gh release upload "$RELEASE_TAG" target/PlaceholderAPI.jar --clobber
           else
             gh release create "$RELEASE_TAG" target/PlaceholderAPI.jar --target "${{ github.sha }}" --title "$RELEASE_TAG" --notes "Automated release for $RELEASE_TAG"
           fi
+      - name: Deploy to PowerNukkitX repository
+        if: github.event_name == 'push'
+        run: mvn -B deploy -DskipTests -Darguments="-Dmaven.javadoc.skip=true"
+        env:
+          PNX_REPO_USERNAME: ${{ secrets.PNX_REPO_USERNAME }}
+          PNX_REPO_PASSWORD: ${{ secrets.PNX_REPO_PASSWORD }}

pom.xml

@@ -14,6 +14,14 @@
         <maven.compiler.proc>none</maven.compiler.proc>
     </properties>
 
+    <distributionManagement>
+        <repository>
+            <id>powernukkitx-releases</id>
+            <name>PowerNukkitX Releases</name>
+            <url>https://repo.powernukkitx.org/releases</url>
+        </repository>
+    </distributionManagement>
+
     <build>
         <finalName>PlaceholderAPI</finalName>
         <resources>