To get rid of the duplicate "op"

* ask Oliver (or someone with the correct rights) to create the NPM package on NPM using OpenProject's credentials

* change the package.json to the new name

* review other places where we explicitly name op-blocknote-extensions


Nice to have:

* Begin of the insertion~~rename folder~~ `~~extensions/op-blocknote-extensions~~` ~~to~~ `~~extensions/blocknote-extensions~~` ~~(don'tEnd of the insertion rename Begin of the deletion folder `extensions/op-blocknote-extensions` to `extensions/blocknote-extensions` (don't renameEnd of the deletion the hocuspocus folder. We will get rid of this when we switch to Begin of the insertionyHub)~~

* renaming would probably cause some extra effort on crowdin setup, so it's better to leave as is


End of the insertion Begin of the deletion yHub)


End of the deletion Ensure:

* Change archiving message in the old op-blocknote-extensions repo to point to the right NPM package (without "op")