Setup PR check and release Github Actions

.github/workflows/pull_request.yml

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+name: Check PR
+on: [pull_request]
+
+jobs:
+  pr:
+    name: PR check
+    runs-on: [ubuntu-latest]
+    env:
+      DANGER_GITHUB_API_TOKEN: ${{ secrets.DANGER_GITHUB_API_TOKEN }}
+    steps:
+      - uses: actions/checkout@v1
+      - uses: actions/setup-ruby@v1
+        with:
+          ruby-version: '2.6'
+      - name: set up JDK 1.8
+        uses: actions/setup-java@v1
+        with:
+          java-version: 1.8
+      - name: Run Lint Check
+        shell: bash
+        run: ./gradlew lintCheck
+      - name: Run unit tests
+        shell: bash
+        run: ./gradlew --continue testRelease
+      - name: Danger action
+        uses: MeilCli/danger-action@v2
+        continue-on-error: true
+        with:
+          plugins_file: 'Gemfile'
+          danger_file: 'Dangerfile'
+          danger_id: 'danger-pr'

.github/workflows/release.yml

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+name: Release build
+
+on:
+  release:
+    types: [published]
+
+jobs:
+  release:
+    name: Release build
+    runs-on: [ubuntu-latest]
+    steps:
+      - uses: actions/checkout@v1
+      - uses: actions/setup-ruby@v1
+        with:
+          ruby-version: '2.6'
+      - name: Set up JDK 1.8
+        uses: actions/setup-java@v1
+        with:
+          java-version: 1.8
+      - name: Run unit tests
+        shell: bash
+        run: ./gradlew --continue testRelease
+      - name: Upload to Bintray
+        run: ./gradlew build publish bintrayUpload --stacktrace --no-daemon -PBINTRAY_USER=${{secrets.BINTRAY_USER}} -PBINTRAY_KEY=${{secrets.BINTRAY_KEY}} -PBINTRAY_GPG_KEY=${{secrets.BINTRAY_GPG_KEY}}

Gemfile

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+source 'https://rubygems.org';
+gem 'thefuntasty_danger';
+gem 'danger-checkstyle_format';
+gem 'danger-android_lint';
+gem 'danger-junit'