Better name validator (Sign-on)

[KwikKill]

Type of Issue

• Bug
• Feature Request
• Documentation
• Other

Description

For league of legends but also maybe for other games, we could swap from one time name validator to sign in method.
This require more storage and redirection management (this method often redirect the user to the service website and we get a callback). This allow us to handle name change between the registration and the event.

For league of legends, this is named RSO and need to be activated on our API KEY.