This PR just changes the ordering of our translations files.
I did this because it makes it easier for contributors to update
translations directly in those files without causing lots of
hard-to-read formatting changes each time we export from Lokalise.
I also updated our Notion doc instructions on how to export from
Lokalise:
https://www.notion.so/tldraw/How-to-make-a-PR-from-Lokalise-e63e61f6beec495bbb4c31c376e9c1a1?pvs=4
This PR updates our translations based on community contributions from
Lokalise.
It also removes unused translations.
(This PR was also to test out our new Lokalise config for the new repo)
## Release Note
* Added and updated translations for Galician, Italian, Simplified
Chinese, and Traditional Chinese.
* Removed unused translations.
