re_folder_search(input_folder, regexp, **kwargs)
    Scans a folder an returns a list of the paths to files that matched the requirements. Uses regular expressions. Previously named RegFileSearch
Parameters:
| Name | Type | Description | Default | 
|---|---|---|---|
| input_folder | TYPE | DESCRIPTION. | required | 
| regexp | TYPE | DESCRIPTION. | required | 
| **kwargs | optional | DESCRIPTION. | {} | 
Returns:
| Type | Description | 
|---|---|
| list none  | DESCRIPTION. |