* Converts some files from .js or .mjs to .ts
* Moves the API code from src/taxonomy/tag-list/data into src/taxonomy/data
* Cleans up and improves some type definitions
* No user-visible changes / functionality changes.
* chore: rename apiHooks.jsx to apihooks.js
* refactor: consolidate taxonomy API code
* fix: was not invalidating tags after import
* fix: UI was freezing while computing plan for large import files
