Add QwiicCustomOLED

[PaulZC]

This release adds the QwiicCustomOLED class:

• The display width, height, contrast etc. can be defined manually before the display is begun
• This allows a single class to be used for multiple display types
  • This is useful when writing code for a product which could have either a 64x48 Micro OLED or a 128x64 1.3" OLED connected

[PaulZC]

Sweet. Thanks!

[gigapod]

Thinking on this -- the one way to get around setting m_device public, is to create accessor methods on the device for the parameters needed. So QwOLEDCustom would have set[value] methods, which would stash the values in the instance data and use them on init. The QwiicCustomOLED class also implement the same methods and just call the same methods on m_device. ... In this case, m_device would need to be protected, not private.

[PaulZC]

Okie dokie. I'll get on this tomorrow! (I don't think we need to revert anything today. The changes and example work - and haven't been released. We can safely finesse them tomorrow.)

[gigapod]

Thanks Paul. In a way, this is just object oriented syntactical sugar :), but it's the correct way to proceed.