add possibility to add additional tasks or to remove upstream tasks

fix header includes
add cmake subdirectories dynamically

AutoLine now depends on AutoMapper

- rename flight tasks to use camelCase
- add core tasks to flight tasks cmake
- add additional tasks in targets (TODO)
- add templates
- generate hpp and cpp which contain all specified tasks

put flight tasks in separate folder and create a lib for each
goal is to select tasks for targets (e.g. because of flash issue)

The default is auto-detect, but some GPS devices might not like that, such
as the Trimble MB-Two.

Otherwise the conversion from mavlink_mission_item to mission_item
will cause the latitude and longitude of the ROI to be off by a factor of 1e7
in the case of INT mode.

_subscriptions is a vector that is resized when needed. However there could
still be references to elements in the vector when the resize happens.
These references then become invalid.
Using a vector of pointers fixes that.