FE-6181 validate profile when no config is found

[ptpaterson]

Ticket(s): FE-6181

Problem

You can provide a profile when there is no config file and it will behave the same as --profile default. We should error instead.

Solution

Remove the default value for profile option set in cli.mjs. The default of "default" is already set if there is a config file.

In the case where a path to a config file cannot be found, check if the profile option was specified by the caller and throw a validation error if so.

other stuff:

Removed the mutable global argvInput, which is only used by config parsing, and instead use a closure with it to create the config parser. Not strictly necessary by any means, but I have strong feelings about side effects like this, so please holler at me if the curried function appears more confusing than the exported variable.

docs

Result

What will change as a result of your pull request? Note that sometimes this section is unnecessary because it is self-explanatory based on the solution.

Testing

Describe the manual and automated tests you completed to verify the change is working as expected.

[jrodewig]

Minor nits. I would like to include the default in the help text tho. Thanks!