QOI support

[Keterion]

Is your feature request related to a problem? Please describe.
No problems with the app, only was considering using qoi instead of png and there doesn't seem to be any support

Describe the solution you'd like
QOI images being recognized and supported by the app

Describe alternatives you've considered
Not using the format
Look for other apps, there don't seem tk be any though

Additional context

[deckerst]

Never heard of the format. Is it used a lot in a specific field, like TIFF in the scientific world?

In any case, I don't intend to support niche formats, even if the format is supposedly better than the ones in use. It's like JPEG XL (cf #730). The app relies on the image codecs provided by the device (except for TIFF).

[Keterion]

No, the format is pretty niche and not used in any specific field as far as I know.
I guess support for it shouldn't be expected then.

Still thank you for developing the app and the fast respose though