Add option to exclude recurring donors from donors script

I want to be able to send a custom message to people who didn’t have a recurring donation, pretty much the opposite of the current -r option.

If across the same period, someone had made both a one-time and a recurring donation (in whatever order), it should be excluded from the list as well:

• If these people configured the recurring donation after the one-time donation, we’re happy already.
• If these people made a one-time recurrding donation after possibly cancelling a recurring donation, we don’t want to bother them again.
• If these people made a one-time donation on top of a recurring donation, we’re happy as well.

Parent Task: #16096

Original created by @sajolida on 16695 (Redmine)