Implement more properties

[melix99]

Implement HoveredBackground, ActiveBorderColor and DisabledBorderColor properties.

[melix99]

Currently in draft because I can't figure out why it's not compiling. It's complaining about the CheckboxProps not implementing Default. I thought this was because of the missing macros for the increased number of properties, but after adding the macros, the error still happen. @PoignardAzur do you have any idea of why it's failing? Is there a limit of the number of properties in xilem views?

[Philipp-M]

The issue is simply that Default is only implemented for tuples up to twelve elements.

So I guess we need a different strategy for storing (more) properties.

[PoignardAzur]

Oh yeah, this is... inconvenient. I think the immediate takeaway is that our strategy for implementing properties in Xilem isn't going to scale.

I don't have any non-painful short-term solution, sorry.

[xb284524239]

The border-style property also needs to be supported, with common values including dotted, dashed, solid, double, etc.

[PoignardAzur]

I'm working on a fix for the "tuple too big" problem.

But also, I'd rather not provide the entire matrix of "modifier x property" combos. I've tried to add a small set of modified properties so users can start adding some visual interactivity to apps, but if we want to add the full spectrum, we'll need to implement a system for conditional properties. The existing properties like DisabledXxx, ActiveXxx, etc are a band-aid solution.