Support E Ink screens

[thstyl2000]

Is your feature request related to a problem? Please describe.

With the rise of E Ink notepads (remarkable, onyx etc), document sharing (primarily pdf) to and from such devices has seen a boom. Using the client as-is, is doable, but with a very bad experience.

Describe the solution you'd like

An E Ink-friendly version of the client (greyscale/limited colors/no backgrounds, page turning instead of scrolling, no animations etc)

Describe alternatives you've considered

There are no alternatives, only the possible use of optimizations on the E Ink tablet side with unsatisfactory results.

[Ramblurr]

This would be most welcome! I have no less than 4 android e-ink devices now. I want to use Nextcloud on all of them, and the app is really quite unsuited to e-ink screens.