[FR] Encode filtering in query params

[brendan-kellam]

When selecting a set of filters in the left panel, it would be nice if we encoded the selection in the URL s.t., the link could be shared with the filters applied.

For example, applying these filters:

Would result in these query params:
?query=useEffect&filterRepos=mui/material-ui,novuhq/novu&filterLangs=TSX