samurai sword alias for Katana man from csm

BUR #14026 has been approved by @nonamethanks.

create alias samurai_sword_(chainsaw_man) -> katana_man_(chainsaw_man)

quite a well known name used for Katana Man, also a name most commonly used in the japanese community of Chainsaw Man.

The bulk update request #14026 (forum #228961) has been approved by @nonamethanks.