Derivation by Mathieu Bresciani:
https://github.com/Auterion/trajectory_generator

fix header includes
add cmake subdirectories dynamically

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)

Signed-off-by: Nicolae Rosia <nicolae.rosia@gmail.com>

Signed-off-by: Nicolae Rosia <nicolae.rosia@gmail.com>

Signed-off-by: Nicolae Rosia <nicolae.rosia@gmail.com>

This adds a new module that does:
- read an parse an ULog file, given via ENV variable 'replay'
- apply all parameters from the log file
- read and apply user-defined override parameters from a file
- publish all messages in 'real-time' from the log file and add a constant
  offset to the timestamp to match the system time.
- apply changed parameters in the log (which are not overridden)

Restructuring of generic middleware support files, wrapping of the main ROS calls, skeletons for publishers / subscribers