added a PR pipeline

.github/workflows/dev.yml

@@ -2,7 +2,7 @@ name: Build, Test, and Deploy for Dev Branch
 
 on:
   push:
-    branch:
+    branchs:
       - dev
 
 jobs:

.github/workflows/pr.yml

@@ -0,0 +1,27 @@
+name: CI
+
+on:
+  pull_request:
+    branches:
+      - dev
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v3
+
+      - name: Set up Node.js
+        uses: actions/setup-node@v3
+        with:
+          node-version: "20"
+
+      - name: Install dependencies
+        run: yarn install
+
+      - name: Run tests
+        run: yarn test
+        env:
+          CI: true