Pi zero 2W support, mode7 calibration improvement and other bug fixes #248
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Add Pi zero 2W support:
NOTE: Currently 9bpp and 12bpp capture doesn't work with a Pi zero 2W. This is because reading the GPIOs is 25% slower than an original Pi Zero and there is insufficient time to capture the full 12bpp.
This means that the Amiga, Atari ST, NuLA and AppleIIGS profiles are hidden when a Pi zero 2W is used and a warning is shown on screen.
All other 1bpp, 3bpp and 6bpp profiles including Apple II/IIe/IIc still work on the Zero 2W
Also:
Add 9bpp and 1bpp support for simple mode
Fix interlace detection bug
Improve selection of optimal calibration in mode 7
I have released this as beta 42: https://github.com/IanSB/RGBtoHDMI/releases/tag/4f4a5a9