Dangerzone map notes

[ghost]

Summary

SUMMARY: Features "Dangerzone map notes"

Purpose of change

Fixes #36792

Describe the solution

Allow you to mark a map note as dangerous from the list notes UI, and set a danger radius.

Pathing will then reject this area nad go around it.

Describe alternatives you've considered

Other ways of marking it, perhaps by choosing a specific color or symbol, but rejected that as too ambigious, better if its set specifically as a bool.

Testing

Made a map note, in the list notes UI, I marked it as dangerous from the new UI key option displayed there, this then displayed the Dangerous area! top-right map text when hovering over the note, and when selecting an autotravel route, it went around that point.
Tried again with a radius of 2, and it went around that expanded area.

When trying to select a point to path to within a danger area, the game hangs briefly, this is trying all possible routes to get within the danger zone, but cannot, I dont see this as a huge problem, its a bit annoying but im not sure how to fix that.

Additional context

N/A

[ghost]

Forgot to mention - made a little change to the pathing code while I was there, where it prompts if you want to swim along the path.

This was annoying, when its entirely situational, if you are in water already, or the path end point is in water, its obvious you wan tto swim, so I tested for those conditions instead.
Its a bit unrelated to this PR, but I was in that code area already.