improve search relevance and discovery

[danielroe]

better ranking, category browsing, similar packages suggestions

[Haroenv]

If you want, you can use the index used for yarn if you put a "search powered by Algolia" somewhere. Shoot me an email if you're interested :)

We can also tweak the relevance and rules a bit if they're interesting for everyone

[danielroe]

@Haroenv want to come join the discord server? https://chat.npmx.dev