[Mod] APIify modlogs

[palmtree5]

This will allow for easier usage of mod logs by third party cogs by allowing them to be able to register new case types. The mod log can be accessed by other cogs by doing something like self.modlog = self.bot.get_cog("Mod").modlog. Then from there, they can use register_casetype to add a new case type and then use new_case for adding new cases. This does not reset cases at all, but settings related to the modlog feature (i.e. modlog channel and case type settings) would need to be redone by the user after updating if this were merged as is

[palmtree5]

As for what needs to be tested:

• Create a case
• Specify a reason
• Edit the case
• Register a custom case type and try using it

[Twentysix26]

Needs a rebase

[palmtree5]

rebase done

[palmtree5]

ok, this is actually fixed now

Rebase complete

[palmtree5]

bump since it's been almost 2 weeks

[palmtree5]

Rebasing intensifies

[palmtree5]

And done

[tekulvw]

Do we want to just hold off on this and incorporate it into V3?

[tekulvw]

Closing as this will likely be included in V3.