gh action added to publish

.github/workflows/publish.yml

@@ -0,0 +1,21 @@
+name: Publish project to Maven repository
+# OR, publish per each commit
+on:
+  push:
+    branches: [ main ]
+jobs:
+  publish:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Set up JDK
+        uses: actions/setup-java@v1
+        with:
+          java-version: 18
+      - name: Grant execute permission for gradlew
+        run: chmod +x gradlew
+      - name: Publish with Gradle
+        run: ./gradlew keyforge:build keyforge:publish
+        env:
+          MAVEN_NAME: ${{ secrets.MAVEN_NAME }} # token name
+          MAVEN_SECRET: ${{ secrets.MAVEN_SECRET }} # token secret (password)