Feature/GitHub action (#23)

* feat: add release action

* feat: add checkstyle action

.github/workflows/release.yml

@@ -0,0 +1,38 @@
+# This workflow will build a package using Gradle and then publish it to GitHub packages when a release is created
+# For more information see: https://github.com/actions/setup-java#publishing-using-gradle
+
+name: release
+
+on:
+  push:
+    tags:
+      - 'v*'
+
+jobs:
+  jpackage:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v2
+      - name: Set up JDK 11
+        uses: actions/setup-java@v1
+        with:
+          java-version: '11'
+          server-id: github # Value of the distributionManagement/repository/id field of the pom.xml
+          settings-path: ${{ github.workspace }} # location for the settings.xml file
+
+      - name: Build with Gradle
+        uses: gradle/gradle-build-action@937999e9cc2425eddc7fd62d1053baf041147db7
+        with:
+          arguments: api:build -x checkstyleMain -x checkstyleTest
+
+      - name: Release-mac
+        uses: softprops/action-gh-release@v1
+        if: startsWith(github.ref, 'refs/tags/')
+        with:
+          files: app/build/libs/databasir.jar
+          draft: true
+          fail_on_unmatched_files: true
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+