Feature: Add TFT and E-Ink Displays

[brentru]

This pull request adds support for TFT and E-Ink Displays to the WipperSnapper firmware.

Major Changes:

• Adds display component to WipperSnapper
  • display/controller - Handles routing and management of Protobuf messages between App and Hardware instances
  • display/hardware - Handles multiple types of display drivers
• Adds Display Drivers - display/drivers/
  • display/drivers/dispDrvBase.h - Abstract base class for display drivers, provides a common interface for all display drivers,
  • display/drivers/dispDrvSt7789.h - Driver for ST7789-based TFT displays, such as Adafruit FunHouse and Adafruit Feather ESP32x TFT
  • display/drivers/dispDrvThinkInkGrayscale4Eaamfgn.h - Driver for ThinkInk 2.9" Grayscale 4-level EAAMFGN display (present on the 2025 version of the Adafruit MagTag)
  • display/drivers/dispDrvThinkInkGrayscale4T5.h - Driver for ThinkInk 2.9" Grayscale 4-level T5 display (present on the pre-2025 version of the Adafruit MagTag)
• Removes LVGL build dependencies for FunHouse
• Removes prior LVGL-based display component work from WipperSnapper including prints, structs, classes and icons

Resolves:
#792

[tyeth]

Looks good @brentru, just some minor things.
Also, I hadn't appreciated when writing the runNetFSM comments that any MQTT command/publish also counts for keep alive, so we do not need to ping after 5seconds if a recent publish happened (maybe sub ack too?). We could instead reset the last ping time after any successful publish.

[tyeth]

LGTM