A.I. Voice utility alias

BUR #26318 has been rejected.

create alias ai_voice -> a.i._voice

Utility alias. Just so much easier to type the former.

And right now typing ai voice only brings up this monstrosity: anata_wa_kitto_shiawase_nan_dakara_sonna_koto_bakari_iwazu_ni_motto_ai_da_to_ka_hito_wo_suki_ni_naru_da_to_ka_sou_iu_koto_wo_iubeki_ja_nai_ka_na_(voicevox)

ai voice has become incredibly ambiguous in recent years, and could easily be mistaken for ai-generated voice.

The bulk update request #26318 (forum #280893) has been rejected by @luntoer.