add named arguments to the use line

[georgettica]

Purpose

As a cobra user, I would like to add named arguments (maybe even in the LongDescription explain more on them) so they will show up when I run the --help on the created command

Current state

I need to add to the Use my arguments or override the whole line with UseLine

cobra/command.go

Line 1245 in 5b2b9e9

func (c *Command) UseLine() string {

this is related to openshift/osdctl#206

[johnSchnake]

Duplicate of #378

That issue has some interest but since it could be an issue with larger scope I thought it warranted a more thorough design if you're interested in taking that on.