Use "global_name" instead of "username"

[Kyoya]

Is your feature request related to a problem? Please describe.
Since the new Discord username system update, they've updated the api too.

Describe the solution you'd like
I think using "global_name" instead of "username" (the parameter that API returns) would be better.

Here's a Discord API(v9) json data example

It also returns "0" as discriminator which makes it look like broken.

Maybe using both would be good too,
Like:
[User's Global Name]
[user's username]

Example:

Describe alternatives you've considered

Additional context