Allow the language selector to detect autonym by exonym

[chukarave]

This PR adds the ability to search for a language name in any language and have the autonym suggested (same behavior as Wikidata).

Bug: T353727

[hasanakg]

Everything works great! One exception: I think we need to have a debounce period for API searches, right now we send an API call immediately after key down, but we need to call the API if the user doesn't write for some period like 300ms.

[chukarave]

@hasanakg this is a great point, I added debouncing (naming advice welcomed) but to avoid displaying the "Language not available" message often while the input is still being typed in I set it to 200ms. what do you think?

[hasanakg]

We need to solve the empty input problem that I mentioned in the code comments.

[guergana]

@chukarave as much as I would have liked to come up with the solution for the svg-jest mock transformer by myself, i actually found it in this github issue thread, in case you wanna take a look: jpkleemans/vite-svg-loader#35 (comment)

[chukarave]

@guergana nice! thanks. it's pretty straight forward, I like that it doesn't require installing any svg tansformer packages.