[Feature] Implement quick save feature on Android/iOS

[Etim-Orb]

Is your feature request related to a problem? Please describe. A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]

I use Cryptpad to log todo stuff on Android. When I add an entry to my list I exit and wipe the app, from the app timeline because it is not longer needed and assuming it has saved the text (just how it would happen with any other notepad app). But the autosave did not happen yet in these cases (this would otherwise take ~5 seconss to happen automatically which is really long when we are talking aboout dynamic events and ease of use).

Describe the solution you'd like A clear and concise description of what you want to happen.

• Either implement some kind of save icon that is colored, visible and stands out from other UI elements, also does not get hidden

• allow caching non saved versions which can then be later reopened and saved

• or do not wait to save documents or shorten the time it takes to save automatically

Additional context Add any other context or screenshots about the feature request here.

Also please make the save status indication (which is currently a colored line) a bit more visible.