[Suggestion]: Provide search processor api

[vfyjxf]

Suggestion

I would like you to provide an api that would allow mod authors to modify the matching process. Originally we had to provide the same value as the string to match, but with this api we can use nihao to match "你好".
This is very helpful for players like Chinese players.
Of course, a configuration should also be provided to allow the player to choose which search processor to use.