[loco/main_prop] Fixes LPC main
[loco/main_prop] Implements simple pos_uncertainty-test
* Results compares fine with simu script
[main_prop] Moves position utilities to the libraries folder as PosTools
[cairo_hmi] Adds test
[cairo_hmi] Adds mobile content
[cairo_hmi] Adds playground drawing (with tranformation to fit in window)
* Adds global context to store "global" data
[cairo_hmi] Reorganizes files & adds ellipse drawing
[cairo_hmi] Adds pos_uncertainty_mix real-time test
[cairo_hmi] Draws 95% ellipses instead of 68% ones
* Removes mobile text