Add support for ST7920 LCD Display

[forntoh]

Discussed in https://github.com/forntoh/LcdMenu/discussions/176

^{Originally posted by NWSpitfire July 11, 2024} Hi!

I have come across this library on my quest to implement a simple menu to display on my 128x64 SPI LCD (ST7920) and 256x64 SPI OLED (SSD1322).

It looks great, but I see it is mainly geared for character displays like 1602 and 2004 types. Will it work with my dot matrix displays?

Thank you!