Batch display command arguments

[mark9064]

• Address window and scrolling arguments are now sent in a single multi-byte transaction rather than multiple single-byte transactions
  • Faster: much less overhead due to the workaround required to send single bytes
  • Display update speed is mostly limited by the SPI bus so using the bus more efficiently helps significantly
• Improved a few other documentation bits inside the display driver

This wasn't really possible without the fixing the SPI race conditions, but with #2046 merged we can enjoy this speed up now

[github-actions]

Build size and comparison to main:

Section	Size	Difference
text	376952B	-48B
data	940B	0B
bss	63548B	8B