This addresses the code review comments:
- fuxingloh/multi-labeler is written in Typescript
- config in different file
- only looking at the PR title, not the description
# Keyman Conventional Commit suggestions:
# - Consider appending the text ". Fixes#3869" to your commit message.
This PR adds the labeler-action GH action that applies labels
based on the PR title or description. This allows to automatically
assign labels based on our conventional commit message.
