[FEAT] Support bulk updating commands.

[DonovanDMC]

Is your feature request related to a problem? Please describe.
Sort of related to #24

Describe the solution you'd like
Due to the heavy ratelimits around creating commands, you should add support for bulk updating commands.

Describe alternatives you've considered
None.

Additional context
Bulk Overwrite Global Application Commands
Bulk Overwrite Guild Application Commands