Added option to Mission Planner to have output turned on only when in survey area

I understand that a camera can be triggered at distance intervals when only in the survey area using the Breakup Starts option.

It would be great if a similar type of output or servo position could be turned ON only when in the Survey area, and OFF when outside it.

Thanks for your help

Start by locating the Mission Planner code that handles Survey Area boundaries and the existing Breakup Starts option. Determine how an output or servo position could transition on entry to and exit from the survey area, then identify an appropriate way to verify both transitions. The issue does not name specific files or tests.

Written by the indexing model from the issue text.