[Feature] Search character by nickname

[FI00ds]

Motivation

When searching for characters, it can be easier to remember the nicknames / short names than to remember the official ones.

Goal

Be able to search for characters by nickname/shortening instead of official name (e,g, FX for Fu Xuan / Feixiao, Bibi / Daniel for DHIL / Dan Heng).

Update the filters for the Character tab and Character Selection modal searchbars (and maybe also character exclude) to compare against a list of language specific nicknames for each character on top of the displayed name.