Add github workflow test file

.github/workflows/test.yml

@@ -0,0 +1,17 @@
+name: Unit Tests
+
+on: [push]
+
+jobs:
+  tests:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - name: Set Node version
+        uses: actions/setup-node@v3
+        with:
+          node-version-file: '.nvmrc'
+      - name: npm install
+        run: npm ci
+      - name: Unit Tests
+        run: npm test