Library for Pico driving the ERCM240128 OLED display

This initializes the display, supports both fonts, and displays text and graphics. This is intended to be used as part of another project, but it does include a simple CLI if the Pico is connected to a serial terminal. This CLI allows testing and experimenting with the display.

The EMC240128 used the UltraChip UC6963C OLED controller chip, which is a superset of the Toshiba T6963C controller chip. This library would be easily adapted to other display panels using either of those controls.

The EMC240128 panel may have a soldered jumper that forces it to only use Font-1, but the solder jumper can be removed and the Font-Select pin on the interface connector to be used.