Create labeler.yml and semantic.yml in each repository

It seems we will need to add these two files to each repository to automate how to assign labels and how to follow the best practice to raise a PR.

Start by identifying which repositories are in scope and inspect their existing GitHub configuration. Determine the required contents and conventions for labeler.yml and semantic.yml, then verify that both files automate label assignment and PR best practices in every target repository.

Written by the indexing model from the issue text.