add "Copilot Setup Steps"

Author: GrantBirki

.github/workflows/copilot-setup-steps.yml

@@ -0,0 +1,26 @@
+name: "Copilot Setup Steps"
+
+# Allows you to test the setup steps from your repository's "Actions" tab
+on: workflow_dispatch
+
+jobs:
+  copilot-setup-steps:
+    runs-on: ubuntu-latest
+    # Set the permissions to the lowest permissions possible needed for *your steps*. Copilot will be given its own token for its operations.
+    permissions:
+      # If you want to clone the repository as part of your setup steps, for example to install dependencies, you'll need the `contents: read` permission. If you don't clone the repository in your setup steps, Copilot will do this for you automatically after the steps complete.
+      contents: read
+    steps:
+      - name: checkout
+        uses: actions/checkout@v4
+        with:
+          persist-credentials: false
+
+      - name: setup node
+        uses: actions/setup-node@v4
+        with:
+          node-version-file: .node-version
+          cache: 'npm'
+
+      - name: install dependencies
+        run: npm install