Add workflow_dispatch trigger to CI workflow

Author: niyamsw

.github/workflows/ci.yml

@@ -17,7 +17,7 @@
 
 name: Simulator CI
 
-on: [push, pull_request]
+on: [push, pull_request, workflow_dispatch]
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}