lint --skip-formatters

[thejcannon]

Is your feature request related to a problem? Please describe.
Our current workflow is one CI step for formatters (in check mode) and one for linters. As we roll out Pants, I don't want us to change CI just yet.
As we change formatters (adding removing etc...) it'd be nice to not have to change the pants args each switch.

Describe the solution you'd like
a --skip-formatters flag for lint.

Describe alternatives you've considered
--skip-X and --skip-Y

Additional context
This doesn't have a good "mirror" for "only formatters", as --skip-linters would be ambiguous. It also name squats on "formatters", but I hope that tool name will never need to exists 😂

[charlesoconor]

This would be awesome I have a script that has to list them out by hand to not run them twice.

[Eric-Arellano]

@thejcannon this is now super easy to do thanks to your improvements! I'll try this out right now before lunch :) #15427