* Remove argument separator from commands
Currently, the argument separator (`--`) is only supported on
`dotnet run`. This PR removes it from other commands to make the help and
usage of these command clearer.
* Adding dotnet run message test
* Responding to PR feedback
* Localization for dotnet-clean command.
* Modified spacing to keep under the 120 char limit
Moved the parameters of each option to a new line.
* Moved projectArgument parameter to a new line
