[FEATURE] Native implemention of giving players XP

[nullsystem]

Description

If there's a server crash and people comes back in, all the XPs will be lost. Provide a way to add players XPs from authorized players.

Proposed Solution

.givexp [NAME] [XP] only by authorized players checked from a key-value text file list stored in the server. Also limit to spectator-only and in ready-up state.

Alternatives Considered

No response

Additional Context

No response

[DESTROYGIRL]

Why not just make it a console command, otherwise we have to manage two admin lists
This is how the score setting command was done and it worked fine

[DESTROYGIRL]

Oh ok #1879