Premium Task Volunteering: Add a local search plugin to the docusaurus docs

[klauss194]

Hey guys,

I'll attempt this task over christmas. should be done early Jan.

I'll take the provided package reference: https://github.com/cmfcmf/docusaurus-search-local
Pull locally the docs, check docs, integrate and submit a PR

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed soon. If you still have a problem, make a PR with a test case or to prove that you have tried to fix the problem. Notice that only bugs in the rxdb premium plugins are ensured to be fixed by the maintainer. Everything else is expected to be fixed by the community, likely you must fix it by yourself.

[pubkey]

Thank you for your work.
#5429