Improve description/review/notes fields

[mateusz-bak]

Is your feature request related to a problem? Please describe.
I find that the 5000 word limit on notes is often too tight.
I also miss the ability to insert images directly into notes, especially photos of book pages.

Describe the solution you'd like
An increase to 10000+ words would be very important.
A camera function for the direct integration of images or a separate tab for this would be great. It would also be handy to be able to open the camera directly in this case and when adding a cover image, instead of having to open the file manager first.

Describe alternatives you've considered
A clear and concise description of any alternative solutions or features you've considered.

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

[mateusz-bak]

I think a rich text editor would work great.

[lucastucious]

Maybe even using markdown syntax for lightweight format?

[Ashkanph]

I think 10,000 WORDS would be amazing! However, the current limit of 5,000 CHARACTERS is insufficient for my reviews and notes. Sometimes, I need more than 25,000 characters for my notes alone (apart from my review).

[mateusz-bak]

Also proposed in #849