Would a PR Implementing a QOI image decoder be merged?

Hi, I was considering adding a decoder for the [QOI format](https://qoiformat.org/) to this library, to add support for the extremely simple lossless image compression format. I have [a simple decoder](https://github.com/shraiwi/mini-qoi) that has a memory footprint of about 300 bytes and runs perfectly on an UNO, so do you think that something like that would make sense for this repository, or would it make more sense to keep the QOI decoder as a separate Arduino library? Thanks!

This issue is a proposal asking whether QOI support belongs in Adafruit_ImageReader or a separate Arduino library, and it names no implementation files or tests. Review the repository's existing image-loading interface, the QOI format link, and the linked mini-qoi decoder; done currently means reaching a maintainer decision on scope and repository placement.

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