The arming button required some refactoring in order to support to
toggle arm/disarm using the vehicle_command. Otherwise manual_control
would have to subscribe to the arming topic and we would spread out the
logic again, and risk race conditions.
Instead of only looking at the diff between two RC samples to decide
whether a user wants to override, we now look at the filtered diff over
one second. This should be more robust to RC sent at various or varying
rates.
This moves the remaining handling of the manual control stuff out
of commander. All communication between manual control now goes through
vehicle commands, and the landing gear topic.
This adds a selector class with unit tests.
The idea is to have a valid flag in manual_control_septoint and set that
according to the selection and/or timeout of manual_control_inputs.
Julian Oes