MultiServer: Make it so hint_location doesn't set an automatic priority

[NewSoupVi]

Alternative standalone implementation of #4674

I also decided I didn't like how the current code or the code in that PR tied automatic behavior to specific passed statuses. In my opinion, if one specific status is explicitly passed to these functions, that status should be used exactly (except in the case of "found").

As such, there are two scenarios:

1. You want an automatic status based on item quality
2. You have a specific status in mind
   2.a This "specific status" happens to be HintStatus.UNSPECIFIED

I think it is cleaner and more elegant to express this as status: HintStatus | None, where "None" means "make an automatic status", so that's how I ended up implementing this.

Tested:
Lightly

[NewSoupVi]

I did also notice how every instance of collect_hints currently uses automatic priority, and every instance of collect_hint_location_id / collect_hint_location_name uses "Unspecified" priority, which means in theory the code could be further simplified to just hard code each behavior to each function.

However, I do actually have plans for setting specific priorities even in case of a location-derived hint, so I decided to keep the status arg for these functions, and just default them to None and Unspecified respectively

[EmilyV99]

Looks great! Read through all the changes, though didn't test myself.

Hope this gets merged ASAP (in time for 0.6.0!)