This should solve #23.
This is a fully static search implementation powered by [Pagefind](https://pagefind.app/).
In terms of UI, I found and implemented a section in the sidebar for searching the documentation. It was hidden presumably waiting for implementation. It mentioned using the slash (/) key for searching, so I implemented the hotkey as well.
I made the indexing command required by Pagefind run after Eleventy finishes building using the `.after` hook.
Reviewed-on: https://codeberg.org/Codeberg/Documentation/pulls/370
Co-authored-by: oatbiscuits <oatbiscuits@noreply.codeberg.org>
Co-committed-by: oatbiscuits <oatbiscuits@noreply.codeberg.org>
