BOM

Continued from https://github.com/embedded-graphics/embedded-graphics/issues/671:

> Sorry if I wasn't clear earlier in the thread; I think your list of 4 displays is a good one:
>
> * SSD1306 OLED (1 BPP)
> * SSD1327 OLED (4 BPP)
> * ILI9341 LCD (16 BPP or 18 BPP)
> * A three color EPD
>
> As for specifics (as close to those as you can get on Aliexpress...):
>
> * SSD1306: Any I2C 0.96" OLED module, e.g. https://www.aliexpress.com/item/32638662748.html (any colour)
> * SSD1327: I don't have much experience with these modules but [this](https://www.aliexpress.com/item/1005003784174529.html) looks like a common form factor for the modules. Shall we go with the I2C one? We can jumper between this and the SSD1306.
> * ILI9341: [this module](https://www.aliexpress.com/item/1005003936535877.html) is the most common form factor and supports SPI.
> * EPD: The 2.13" and 2.9" modules [here](https://www.aliexpress.com/item/1005002767511663.html) look like a common form factor. The connectors appear the same, so making a layout to accept both sizes with two sets of mounting holes would be easy enough.