Enable manual codeql run

Author: mgravell

.github/workflows/codeql.yml

@@ -6,6 +6,8 @@ on:
   pull_request:
     # The branches below must be a subset of the branches above
     branches: [ 'main' ]
+  workflow_dispatch:
+    
   schedule:
     - cron: '8 9 * * 1'