[FEATURE]: Post-action hooks

[SomethingGeneric]

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

Not really, but it'd be nice to not need a script like repo-update, and have malachite handle the functions via some kind of workflow

Describe the solution you'd like

Maybe a hooks/ dir for a workspace in repo mode?

Describe alternatives you've considered

n/a

Additional context

No response

[Trivernis]

Nu script hooks 😏