Add support for downloading PowerPoint PPT files

Place files in agenda item directory when downloading tdocs

Hotfix : change max DL limit 120 -> 30 and limi

Fix

Random fixes + doc bits

Use kreuzberg for document extraction + rate limit downloads

Misc changes

Enable downloading multiple doc types

Make doc extraction async

wip

Use single method for retrieving TDocs + prepare code to refine

Remove usages of NLTK (that is unused actually)

Allow listing other document types than xxxxCRs

Expose FTO individual topics

Fix TDoc download

WIP solution drafting

Reword routes + prepare for private gen

Remove old endpoints

Merge all API endpoints into the app API

Migrate API modules to api routers

Prepare for splitting API routes into their own routers