[Enhancement]: Ability to add NEX/Rendez-Vous Accounts via the GUI

[BDMCGaming]

Checked Existing

• I have checked the repository for duplicate issues.

What enhancement would you like to see?

I wish to be able to add an account into nex-viewer without having to fiddle around in the configuration file. There's a menu for modifying accounts that are already in nex-viewer, so why not add functionality to add an account through this menu

Any other details to share? (OPTIONAL)

No response