UI / Feedback refactor

[9and3]

This patch reformat the general UI and brings some fixes and enachements of AC feedback system:

• UI must be lighter #50 and No mesh visualization from ttool when the pose is validated #48
  The interface is now lighter:
• colors are darker to adapt for high luminosity;
• a pre processor constant (settable via cmake -DENABLE_DEV_UI=ON) has been added to disabled of most of UI. If you need it just switch it to ON, by default is OFF;
• no AI tool detector
• there is final button to show the mesh now, by default the user will be documented and instructed to terminate the toolhead pose initialization with it.

• refacotring visuals for ACIM components displayed #46
• multiple modifications and utilitis added to the interface for ACIM control

• Feedback drilling visuals refactoring #49

• the feedback for the drill is now refactored and simplified
  

• If camera is not in stream mode we got segmentation fault #41
  Solved by closing the program