Add github ci action

Author: aleksandr-m

.github/workflows/verify.yml

@@ -0,0 +1,26 @@
+name: verify
+on: [push, pull_request]
+jobs:
+  verify:
+    strategy:
+      matrix:
+        platform: [ubuntu-latest, macos-latest, windows-latest]
+    runs-on: ${{ matrix.platform }}
+    steps:
+      - name: Check out repository
+        uses: actions/checkout@v2
+
+      - name: Set up JDK 7
+        uses: actions/setup-java@v1
+        with:
+          java-version: 7
+
+      - name: Cache Maven packages
+        uses: actions/cache@v2
+        with:
+          path: ~/.m2
+          key: ${{ runner.os }}-m2-${{ hashFiles('**/pom.xml') }}
+          restore-keys: ${{ runner.os }}-m2
+
+      - name: Maven verify
+        run: mvn -B verify -Prun-its