add publish github action

.github/workflows/publish.yml

@@ -0,0 +1,44 @@
+name: Publish Release
+on:
+  release:
+     types:
+       - published
+jobs:
+  build:
+    strategy:
+      matrix:
+        # Use these Java versions
+        java: [
+          1.8,  # Minimum supported by Minecraft
+          11,   # Current Java LTS
+          15    # Latest version
+        ]
+        # and run on both Linux and Windows
+        os: [ubuntu-20.04, windows-latest]
+    runs-on: ${{ matrix.os }}
+    steps:
+      - name: checkout repository
+        uses: actions/checkout@v2
+      - name: validate gradle wrapper
+        uses: gradle/wrapper-validation-action@v1
+      - name: setup jdk ${{ matrix.java }}
+        uses: actions/setup-java@v1
+        with:
+          java-version: ${{ matrix.java }}
+      - name: make gradle wrapper executable
+        if: ${{ runner.os != 'Windows' }}
+        run: chmod +x ./gradlew
+      - name: copy linux deps
+        if: ${{ runner.os != 'Windows' }}
+        run: mkdir -p build/loom-cache && cp ./deps/* ./build/loom-cache/.
+      - name: copy windows deps
+        if: ${{ runner.os == 'Windows' }}
+        run: mkdir build\\loom-cache && copy .\deps\* .\\build\\loom-cache
+      - name: build
+        run: ./gradlew build
+      - name: Upload assets to GitHub
+        uses: AButler/[email protected]
+        if: ${{ runner.os == 'Linux' && matrix.java == '11' }} # Only upload artifacts built from LTS java on one OS
+        with:
+          files: 'build/libs/*;LICENSE'
+          repo-token: ${{ secrets.GITHUB_TOKEN }}