pixel.RGB555 or pixel.BGR555 ?

[sago35]

@aykevl
It might be better to name pixel.RGB555 as pixel.BGR555.
I think the name becomes very important when using pixel.NewImageFromBytes().

https://github.com/tinygo-org/drivers/blob/v0.33.0/pixel/pixel.go#L147-L151

I’m planning to add either ARGB1555 or ABGR1555 in the near future.
When adding this, whether it’s RGB or BGR will become very important.

(I’m planning to add support for loading transparent PNGs.)

[aykevl]

Is there specific hardware that uses this ARGB1555/ABGR1555 format?
The formats generally map to a particular pixel format used in hardware. The order of the bits mostly depends on whether you're counting from the least significant bit or the most significant bit, and can get weird when you're taking endianness into account. So, not sure we need to change anything here.