feature: Allow max_size/max_height to support Nui parameters

[b0nes]

Did you check the docs?

• I have read all the noice.nvim docs

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

The Hover/Signature help is blocking view of my current cursor/what I'm typing, if the docs are too long for my terminal pane.

Describe the solution you'd like

noice.nvim/lua/noice/util/nui.lua

Line 199 in bf67d70

 size.width = minmax(size.min_width, size.max_width, dim.width) 

In the code here, it seems we are allowed to specify a max_height.

In the Nui docs, I can see it allows a percentage and float:
https://github.com/MunifTanjim/nui.nvim/tree/main/lua/nui/popup#size

But not through Noice. When I input 0.8 the docs only show one line when viewing Hover/Signature.
Percentage is a string, which is not allowed.

I don't want to hardcode max_height to something like '10' because if I enlarge my pane, I have a lot more room.

I would like to use Nui's relative capabilities here.

Describe alternatives you've considered

.

Additional context