A small script you can add to your build pipeline to transform XML templates in a library into a namespaced variant, to help avoid collisions with other addons.

in any workflow (preferably after running the BigWigsMods/packager step)

jobs:
  build:
    steps:
      # blah blah blah, grab externals
      - uses: emptyrivers/[email protected]
        with:
          path: path/to/xml/templates # This can be any glob, & is appended with /*.{xml, lua} before being sent to grep
          name: MyAmazingAddOn # reccomend using your addon name, to ensure uniqueness as far as blizzard is concerned
          pattern: MyAddOn #optional, defaults to MyAddOn

      # blah blah blah, upload to CF or wherever

Because the standard packager is somewhat atomic, it's a bit awkward to inject an extra processing step into the middle. Consider running the packager once with -zd (skip upload & zip creation), then (after this step) run it again with -el (skip download of dependencies & localization, but do zip & upload)