Added necessary files for DroneX Controller

Added squat functions to picker and connected to GUI button. Also added parameters for object thickness at pickup and put down locations

Added files for Picker node and integrated into student GUI, PPSClient, and Paramter service, needs testing

Added a mutex to the RF status label, and adjust the clearing and updating of the bettery status label, seems to be working without too many freezes... will always require more testing

Adjusted battery level image in Student GUI to onlz re-draw when image changes. Tested and seems to be stable.

Loading of parameters from PPSClient, SafeController, and Custom controller now working, still need to debug messages from GUI buttons

Moved the management of YAML file parameters to a Pamater Service node, ideally to make things cleaner, needs to be debugged and tested