CSS math functions min(), max() and clamp()

More advanced mathematical expressions in addition to `calc()`

cssmathmax api: `cssmathmax()` constructor

css api: `cqmax()` static method

css api: `dvmax()` static method

css api: `lvmax()` static method

css api: `svmax()` static method

css api: `vmax()` static method

css property: grid-template-columns: `minmax()`

css property: grid-template-rows: `minmax()`

types: `max()`