Add ability to filter search results by folder or collection in browser extension

[rokejulianlockhart (`{third: "Beedell", first: "Roke"}`{.JSON5})]

@Murz, Improve search function - #2 by eliykat states:

@eliykat

Have you tried using Lunr search queries to narrow your search results? See the documentation here: https://bitwarden.com/help/article/searching-vault/ . It’s a bit of extra typing but it looks really powerful and flexible.