Set check path in the config file

[npquynhdo]

Is your feature request related to a problem? Please describe.
I want to run the check only for a specific folder from the pipeline via the .jscpd.json config file without having to ignore a lots of folder. For example I only want to run check under the ./src folder. Right now it's only possible to run the script like npx jscpd ./src but it'll be better to also allow this in the config file

Describe the solution you'd like
To allow an attribute in the config file (something like path).