feat: Flysky Noble 4 Plus (NB4+) support

[richardclli]

Flysky Noble 4 Plus (NB4+) Support

Development progress:

• LCD drver
• touch driver
• ST, TH
• pots
• switches
• trims
• encoder (the hardware has 2 encoders, once mapped one currently, need some input to how to make use 2nd encoder)
• audio
• battery charging
• internal module (STM32F030 MCU nothing good can be supported)
• external module (Bluetooth USART3 port, mapped as internal module that can support MULTI/AFHDS3/CRSF)
• modding documentation https://github.com/EdgeTX/edgetx/wiki/Flysky-NB4--Hardware-Mod-for-Complete-EdgeTX-Support

Known hardware limitations:

1. No on board RTC support, missing battery and a few cap, diode, crystal components. (PL18 is a lot simpler, just need to add a battery)
2. NOR flash is small (Only 8MB on board, can change the chip to maximum 128MB, same as PL18 mod)
3. DAC sound output work out of the box without modding ^.^

[richardclli]

Finally walked through all code generation dependencies. Need the naming of switches matched to have proper switch config generated and the test cannot pass without proper switch config. And one test case failed because it required more than 2 switches and in which nb4p did not have that much in current implementation.

Haha, some tests harcoded the switch names to SA, SB, etc. So..... the other way round.......

[richardclli]

@pfeerick @raphaelcoeffic Please review to see if you have any concerns on the changes in code generation scripts.