[FEA] Add support for negated POSIX character classes in regular expressions

[anthony-chang]

Is your feature request related to a problem? Please describe.
#5692 added support for the \p{...} syntax but there is also the uppercase \P{...} syntax which are the negated versions of \p{...}

Describe the solution you'd like
Transpile \P{...} into the corresponding character class.

Describe alternatives you've considered
None

Additional context
None