Feature request: adding filter for list of machines

[Rendanic]

Hi,
could we get a filter for the list of machines?
What about filtering the machines by tag=value or with regular expressions?

Regards
Thorsten

[tedsmitt]

Hey @Rendanic, as it stands you can type when the list of instances appears to filter by name/instanceId. So to clarify do you mean building on this and allowing us to return a list of instances with only the tags specified?

E.g. gossm start -p myProfile --tags env=preprod or something like that?

Cheers!

[codezninja]

This PR might support this use case #58