update details to print either command or option

[ttytm]

Improves errors on unknown arguments. Make passing an unknown option directly after v print a similar message like it does for an known command, pointing to v help.

Current:

• Command:

  ❯ v xyz
  v: unknown command `xyz`
  Run  v help  for usage.

• Options

  ❯ v -xyz
  Unknown argument `-xyz`

Updated:

• .

  ❯ v -xyz
  v: unknown option `-xyz`
  Run  v help  for usage.