`function-calc-no-unspaced-operator` should support newer calc functions

[Mouvedia]

What is the problem you're trying to solve?

fix the false negatives for round and other calc-sum functions by broadening the meaning of calc to calc-sum

It doesn't validate any of the newer math functions.

compare https://www.w3.org/TR/css-values-4/#calc-syntax and https://www.w3.org/TR/css-values-3/#calc-syntax

What solution would you like to see?

I already have it working on a local branch for a subset of these.

• [x] abs
• [x] acos
• [x] asin
• [x] atan
• [x] calc
• [x] cos
• [x] exp
• [x] sign
• [x] sin
• [x] sqrt
• [x] tan
• [x] min
• [x] max
• [x] hypot
• [x] clamp
• [x] round
• [x] mod
• [x] rem
• [x] atan2
• [x] pow
• [x] log

[ybiquitous]

@Mouvedia If this issue is incomplete, feel free to reopen. 🙏🏼

[Mouvedia]

@Mouvedia If this issue is incomplete, feel free to reopen. 🙏🏼

I did a partial quick fix. A follow-up PR will be needed to fix the last 10 functions. I added skipped tests to pave the way.