Add github workflow

.github/workflows/ci.yml

@@ -0,0 +1,28 @@
+name: CI
+
+on:
+    push:
+        branches:
+            main
+    pull_request:
+        branches:
+            main
+
+jobs:
+    test:
+        runs-on: ubuntu-latest
+
+        steps:
+            - name: Checkout repository
+              uses: actions/checkout@v3
+
+            - name: Set up Node
+              uses: actions/setup-node@v3
+              with:
+                node-version: '20.15.1'
+
+            - name : Install dependencies
+              run: npm install
+
+            - name: Run tests
+              run: npm test