ci: publish sshauthentication to GitHub Packages

.github/workflows/gradle-publish.yml

@@ -0,0 +1,28 @@
+name: Publish package to GitHub Packages
+
+on:
+  release:
+    types: [created]
+
+jobs:
+  publish:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        java_version: [1.8]
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+        with:
+          submodules: true
+          fetch-depth: 0 # 0 indicates all history
+      - name: Install JDK ${{ matrix.java_version }}
+        uses: actions/setup-java@v1
+        with:
+          java-version: ${{ matrix.java_version }}
+      - name: Install Android SDK
+        uses: malinskiy/action-android/install-sdk@release/0.1.0
+      - name: Publish sshauthentication-api
+        run: ./gradlew :sshauthentication-api:publish
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}