High res captures and changing stream resolution

[JohemianKnapsody]

Adds functions to take high res captures and restart the stream in a low video quality, high capture quality mode

[julianstirling]

Small comments.

I'm not sure whether we used the full-res capture array anywhere wasn't this slower and less reliable?

[JohemianKnapsody]

Something during today's changes seems to have made stitching a scan less reliable, with worse correlations. Wondering whether buffer count affects autofocus affects quality of image affects stitching correlations?

[JohemianKnapsody]

Something during today's changes seems to have made stitching a scan less reliable, with worse correlations. Wondering whether buffer count affects autofocus affects quality of image affects stitching correlations?

I'm happy to say this may have been due to something else, after redoing camera stage mapping and camera calibration all was fine. Made buffer_count an argument, think this is ready to release

[julianstirling]

Great, thanks Joe. I think buffer_count defaulting to the picamera2 standard of 6 is good. It allows us to adjust it when doing high res if needed.