Better command handling

[amycatgirl]

The command handler should be able to do the following things:

• Check for member permissions
• Generate help documentation automatically
• Handle debugging commands gracefully
• Use objects for commands (or alternatively a builder pattern, DSLs aren't really a good solution here, why didn't I make this with Kotlin :c)

[amycatgirl]

A DSL could be a solution here. Although, that would introduce a lot of this keywords across commands, which harms readability.

More research is needed for DSLs.

As for builder patterns, given how I want type-safe arguments and permissions to work, they might be the best fit.

Typing objects is hellish, even more so if you want other parts of the object to "react" to argument types.