feat(filtered_search): Implement filtered search term

This MR introduces first simple token for filtered search.

Term token is responsible for handling input, emitting events and displaying filterable autocomplete.

This component might be generalized to autocomplete in future, but since we have no specs, please let's keep this focused for filtered search purposes ATM.

Please take a look at the entire architecture of filtered_search in !982 (merged) before reviewing (especially in "Space" handling)

Target branch will be set to master as soon as !978 (merged) will be merged