Imply Kaai Yuki V4

BUR #22609 has been approved by @nonamethanks.

create implication kaai_yuki_(vocaloid4) -> kaai_yuki

Same character

BUR #22612 has been approved by @nonamethanks.

create implication hiyama_kiyoteru_(vocaloid4) -> hiyama_kiyoteru
create implication sf-a2_miki_(vocaloid4) -> sf-a2_miki
create implication sf-a2_miki_(2012_ver) -> sf-a2_miki

Might as well add the other 'loids in the same family while we're at it.

The bulk update request #22609 (forum #265888) has been approved by @nonamethanks.

The bulk update request #22612 (forum #265900) has been approved by @nonamethanks.