Feature Request: fuzz type integer range

When I'm looking at idor's generally I generate payloads with Intruder: payload type numbers. But ffuf it's faster than intruder, and I'm able to save results in json format for later post-processing of data. Today I was reading the documentation searching for some parameter to do a integer range fuzz. But I think that feature is not in FFUF.

For example a parameter: ffuf -ir 41234-557670 -u "https://example.com?parameter=FUZZ" will be very interesting for searh that kind of vulnerability.

Thank you for this awesome project !!