feat(.github): init dispatch workflow

.github/workflows/dispatch-integration-test.yml

@@ -0,0 +1,23 @@
+name: Run if-check on requested branch
+
+on: 
+  workflow_dispatch: 
+
+jobs:
+  run:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Set up Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: 18
+          cache: 'npm'
+
+      - name: Install dependencies
+        run: npm install
+
+      - name: Run integration tests
+        run: npm run if-check -- -d manifests/outputs