[FEA] Add regular expression support for Form Feed, Alert, and Escape control characters

[andygrove]

Is your feature request related to a problem? Please describe.
I am filing this for sake of completeness and do not expect this to be a priority but we do not currently support the following items in regular expressions and we fall back to CPU. It should be simple to implement them.

\f | The form-feed character ('\u000C')
\a | The alert (bell) character ('\u0007')
\e | The escape character ('\u001B')

Describe the solution you'd like
Add support for these control characters.

Describe alternatives you've considered
None

Additional context
None