Add CI unittest workflow

Author: Ariouz

.github/workflows/ci.yml

@@ -0,0 +1,18 @@
+name: CI Unittests
+
+on:
+  push:
+  workflow_dispatch:
+
+jobs:
+  build:
+    strategy:
+      matrix:
+        os: [ubuntu-latest, windows-latest, macos-latest]
+    runs-on: ${{ matrix.os }}
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Run unittests
+        run: mvn test