Parser support for attributes with multiple arguments

[drmacdon]

Currently the Grammar for attribute is,

attribute     : NAME ( '(' string ')' )?

Which is limiting if you would like an attribute to have more than one argument. ie. to support a script attribute (#1479, #2192) it would benefit from having multiple arguments in addition to the command. ie.

[script("bash", "-e")]
[script("python", "-W", "all)]
[script("pwsh", "-NonInteractive")]
[script("nu", "--log-level", "debug")]

The error returned for too many arguments could also be better handled if support for multiple arguments was present. confirm.rs:confirm_recipe_with_prompt_too_many_args.

[casey]

I think this should be added if and when we add an attribute which needs it.