RegexLimiter does not parse plus and star operators

## Feature that behaves incorrectly
RegexLimiter does not parse * (zero or more) and + (one or more) as special charecter while parsing regex pattern.
## How this feature SHOULD be working
The * operator should tell the generator to create zero or more of the previous charecter.
The + operator should tell the generator to create one or more of the previous charecter.
Check this out for further reference
https://en.wikipedia.org/wiki/Regular_expression#POSIX_basic_and_extended

Start by locating RegexLimiter and its regular-expression parsing or generation entry point. Exercise it with patterns using * and +, then verify that * permits zero or more repetitions and + permits one or more. Done means both operators are treated as special quantifiers rather than ordinary characters.

Written by the indexing model from the issue text.