Inverse `limit`

[Firesphere]

Is your feature request related to a problem? Please describe

I would like to be able to use an --exclude filter, same as the --limit, but with the reverse functionality.

e.g. pyinfra inventory/myinventory.py main.py --exclude db1 would exclude the db1 server from execution.

Describe the solution you'd like

An implementation just like --limit, but to exclude servers.

[Fizzadar]

Neat idea, I like it.