Allow to disable or limit `find_requests_with_most_matches`

[Enrique Soria]

Hi 👋!

In our project, where we use a lot vcrpy we're getting huge error messages that are being sent to stdout. We're having logs of 24 MiB because of this.

Is there an option to limit (or disable) how many similar requests are find? If not, will it be considered as an enhancement?

Thanks!