Setup Actions CI

.github/workflows/ci.yml

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+name: CI
+on:
+  push:
+    branches: [ master ]
+    tags:
+      - '*'
+  pull_request:
+    branches: [ master ]
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - name: Set up JDK 1.8
+      uses: actions/setup-java@v1
+      with:
+        java-version: 1.8
+    - name: Build with Gradle
+      run: ./gradlew build executableZip
+    - name: Create release
+      if: startsWith(github.ref, 'refs/tags/')
+      id: create_release
+      uses: actions/create-release@v1
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      with:
+        tag_name: ${{ github.ref }}
+        release_name: ${{ github.ref }}
+    - id: get-tag-version
+      if: startsWith(github.ref, 'refs/tags/')
+      run: |
+        version=$(echo ${{github.ref}} | cut -f3 -d/ | sed 's/^v//')
+        echo "::set-output name=version::$version"
+    - name: Upload release asset
+      if: startsWith(github.ref, 'refs/tags/')
+      uses: actions/upload-release-asset@v1
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      with:
+        upload_url: ${{ steps.create_release.outputs.upload_url }}
+        asset_path: build/distributions/kmql-bin-${{ steps.get-tag-version.outputs.version }}.zip
+        asset_name: kmql-bin-${{ steps.get-tag-version.outputs.version }}.zip
+        asset_content_type: application/zip