ci: Migrate from TravisCI to GitHub Actions

.github/workflows/ci.yml

@@ -0,0 +1,72 @@
+# For more information see: https://help.github.com/actions/language-and-framework-guides/building-and-testing-java-with-gradle
+
+name: ci
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+    branches:
+      - '**'
+jobs:
+  check-lint:
+    name: Lint
+    timeout-minutes: 5
+    runs-on: ubuntu-latest
+    steps:
+      - name: Fetch Sources
+        uses: actions/checkout@v2
+      - name: Set up JDK 11
+        uses: actions/setup-java@v2
+        with:
+          java-version: '11'
+          distribution: 'adopt'
+      - name: Setup Gradle Dependencies Cache
+        uses: actions/cache@v2
+        with:
+          path: ~/.gradle/caches
+          key: ${{ runner.os }}-gradle-caches-${{ hashFiles('**/*.gradle', '**/*.gradle.kts') }}
+      - name: Setup Gradle Wrapper Cache
+        uses: actions/cache@v2
+        with:
+          path: ~/.gradle/wrapper
+          key: ${{ runner.os }}-gradle-wrapper-${{ hashFiles('**/gradle/wrapper/gradle-wrapper.properties') }}
+      - name: Spotless check
+        run: ./gradlew spotlessCheck --no-daemon
+  check-gradlewrapper:
+    name: Gradle Wrapper
+    timeout-minutes: 5
+    runs-on: ubuntu-latest
+    steps:
+      - name: Fetch Sources
+        uses: actions/checkout@v2
+      - name: Gradle Wrapper Validation
+        uses: gradle/wrapper-validation-action@v1
+  check-build:
+    name: Gradle Build
+    timeout-minutes: 15
+    runs-on: ubuntu-latest
+    steps:
+      - name: Fetch Sources
+        uses: actions/checkout@v2
+      - name: Set up JDK 11
+        uses: actions/setup-java@v2
+        with:
+          java-version: '11'
+          distribution: 'adopt'
+      - name: Setup Gradle Dependencies Cache
+        uses: actions/cache@v2
+        with:
+          path: ~/.gradle/caches
+          key: ${{ runner.os }}-gradle-caches-${{ hashFiles('**/*.gradle', '**/*.gradle.kts') }}
+      - name: Setup Gradle Wrapper Cache
+        uses: actions/cache@v2
+        with:
+          path: ~/.gradle/wrapper
+          key: ${{ runner.os }}-gradle-wrapper-${{ hashFiles('**/gradle/wrapper/gradle-wrapper.properties') }}
+      - name: Run tests
+        run: ./gradlew --no-daemon clean jacocoTestReport
+      - name: Report test coverage
+        run: |
+          pip install --user codecov
+          codecov