please add an api for user's rules

it will be very handy to have safe method (with api calls) to add / remote / list user rules. Think i'm missing some and checked https://github.com/AdguardTeam/AdGuardHome/tree/master/openapi and there's only /filtering/set_rules so all (maybe long) list of rules are processing on client side, which is not very convinient and reliable when used from external apps/ script.

Rewrite already have its add|list|delete|update but user rules also have $rewrite modifier that allows a way more functional rewrite functionality (along with many other functions) and dont have those add|list|delete|update...