[C++][Gandiva] Implement regexp_matches, regexp_like functions

[asfimport]

Support following signature in Gandiva:
FunctionSignature{name =regexp_matches, return type =Bool, param types =[Utf8, Utf8]}

Reporter: Projjal Chanda / @projjal

PRs and other links:

• GitHub Pull Request #5860
• GitHub Pull Request #8844

_{Note: This issue was originally created as ARROW-7205. Please see the migration documentation for further details.}

[asfimport]

Will Jones / @wjones127:
I'm interesting in finishing this with a PR.

@projjal was this closed because you thought it was no longer needed, or just didn't have time to finish?

[thisisnic]

This issue hasn't had activity in a long time. If it's still being worked on, please leave a comment. Otherwise, it will be closed on 23rd June.

Labelled Status: Stale-Warning for tracking.