As an Agon Programmer
I want to be able to set resolution and # of colour planes independantly
So that I use higher resolutions in FabGL

Background: The ESP32 only has ~400K of DRAM available for data, so higher resolutions at full colour count do not work.

Acceptance Criteria:

• Be able to set the resolution and # of colour planes independantly
• A simple way of setting this up in the set_mode function

Contributers:

• Lennart Benschop
• Igor Chaves Cananea