Add CI workflow with workflow_dispatch

Author: lorencDedaj

.github/workflows/ci.yml

@@ -0,0 +1,21 @@
+name: CI
+on:
+  workflow_dispatch:
+    inputs:
+      environment:
+        description: 'Target environment'
+        required: false
+        type: string
+        default: dev
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 20
+      - run: npm ci
+      - run: npm test
+      - run: echo "Deploying to ${{ inputs.environment || dev }}..."