chore(identity): added middle name feature

[nwvh]

Adds option for players to choose a middle name (two first names) in the character registration UI

[Gellipapa]

Hi! @nwvh Thanks, but here you need to better separate the code, so outsource the logic into a method and use it that way, by default this should be a configurable option and print is included in the code you opened for PR.