Add support for ST7567 lcd displays

[jonathanmlang]

These displays can be obtained very cheaply on places like aliexpress and ebay and use a similar addressing method to the SSD1306. Always wanted to use this library with them so I added an initialization script for it.

How to use it:

oled.begin(&ST7567_128x64, 0x3F);

Everything just works!

[greiman]

I will add this in a future release. I limit the number of releases since the Arduino Library Manager nags users to update libraries.