[Improvements] Data Leak Keywords - RegEX support

[HoneySsharma]

Is your feature request related to a problem? Please describe.
IT would be really helpful if we can have pattern matching also alongside exact match. Currently we can only search for exact keywords, however in real world searching for an exact match would not suffice, would be better if we can have a pattern matching support too.

Describe the solution you'd like
A Regex pattern can be entered by GUI which will be used to find the data which matches the pattern. Would be really great in searching for leaked credentials and other data.

Describe alternatives you've considered
Currently Watcher does not support pattern matching so no alternatives from Watcher end.