Remove all screen graphics

[Steve_1506 (Steve)]

This has been requested for a long time, further back than this 2018 thread:

HUD Customisation

Would really like to be able to customise the HUD to choose what to show and what not to show and move the components around. In a workout for example I don’t need to know who the other riders around me are, whereas for a group ride or race I do. It would be nice to be able to toggle it on or off…