implement js unittest action

Signed-off-by: Arthur Lu <learthurgo@gmail.com>

.github/workflows/js-unittest.yml

@@ -0,0 +1,25 @@
+name: Install jest and run JS unit tests
+
+on:
+  pull_request:
+    branches:
+    - main
+
+  # Allows you to run this workflow manually from the Actions tab
+  workflow_dispatch:
+
+jobs:
+  # Single deploy job since we're just deploying
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Install apt updates
+        run: apt -y update; apt -y upgrade;
+      - name: Install prerequisites
+        run: apt install -y nodejs npm git;
+      - name: Checkout
+        uses: actions/checkout@v3
+      - name: Install dependencies
+        run: npm install
+      - name: Run tests
+        run: npm test