Add publishing workflow

Author: michallaskowski

.github/workflows/publishing-workflow.yml

@@ -0,0 +1,41 @@
+name: Publish release
+on:
+  release:
+    types: [published]
+
+jobs:
+  publish_release:
+    name: Publish Release
+    runs-on:  macOS-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+        with:
+          lfs: true
+      - name: Cache gradle dependencies
+        uses: actions/cache@v2
+        with:
+          path: ~/.gradle/caches
+          key: ${{ runner.os }}-gradle-${{ hashFiles('**/*.gradle*') }}
+          restore-keys: |
+            ${{ runner.os }}-gradle-
+      - name: Cache Kotlin Native dependencies
+        uses: actions/cache@v2
+        with:
+          path: |
+            ~/.konan/kotlin-native-macos-*
+            ~/.konan/dependencies
+          key: ${{ runner.os }}-kotlin-native-${{ hashFiles('build.gradle') }}
+          restore-keys: |
+            ${{ runner.os }}-kotlin-native-
+      - name: Set up JDK 1.8
+        uses: actions/setup-java@v1
+        with:
+          java-version: 1.8
+      - name: Select Xcode 11.4
+        run: sudo xcode-select -s /Applications/Xcode_11.4.app
+      - name: Publish artifacts
+        env:
+          MAVEN_USERNAME: ${{ secrets.MAVEN_USERNAME }}
+          MAVEN_PASSWORD: ${{ secrets.MAVEN_PASSWORD }}
+        run: ./gradlew library:publish