Improve parity between plugin add and plugin remove

[StephenDaDev]

Is your feature request related to a problem? Please elaborate.

The ?plugin command allows plugins to be installed using the ?plugin install command, the opposite of install is uninstall therefore it is unintuitive to not have that complete the desired action in the stock config of the bot.

Describe the solution you'd like

Add plugin uninstall as a hardcoded alias for plugin remove

Does your solution involve any of the following?

• [ ] Logviewer
• [ ] New config option

Describe alternatives you've considered

N/A

Who will this benefit?

Everyone.

Additional Information

This change would improve the UX of the bot for all users and possesses no reasonable downsides.