Add parameters to allow additional color orderings

[david-sawatzke]

Fixes #7

I've ignored RGBW for now, as I haven't heard of any pixel order variations of them.

If I'm not completely mistaken, this doesn't introduce any breaking API changes

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Comments suppressed due to low confidence (2)

src/prerendered.rs:38

• [nitpick] Consider using a consistent generic parameter name for pixel ordering throughout the code (e.g., use 'PO' in place of 'PIXELORDER' in the struct definition) to improve readability and reduce potential confusion.

pub struct Ws2812<'a, SPI, DEVICE = devices::Ws2812, PIXELORDER = pixel_order::GRB> {

src/lib.rs:77

• [nitpick] Consider aligning the generic parameter naming with the implementations (e.g., using 'PO' consistently instead of 'PIXELORDER' in the struct definition) for better clarity.

pub struct Ws2812<SPI, DEVICE = devices::Ws2812, PIXELORDER = pixel_order::GRB> {

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