feat: support negativeDescription for args

[zuixinwang]

close #39

[pi0]

@zuixinwang Any reason closed this? Seems a nice idea with negativeDescription.

One relevant usecase https://github.com/nuxt/cli/blob/132024d5dfda9a24a917fe9d075812f54e0a561b/src/commands/dev.ts#L44

[zuixinwang]

At first, I thought there would be a better way, so I closed this PR, but I haven't come up with a better way yet. If you think this PR is useful, I will continue to do so 😃 @pi0

[zuixinwang]

I merged the code already; this PR could be merged now. 😃 @pi0

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 8 lines in your changes are missing coverage. Please review.

❗ No coverage uploaded for pull request base (main@2a3b7d3). Click here to learn what that means.

❗ Current head 301e439 differs from pull request most recent head b67842b. Consider uploading reports for the commit b67842b to get more accurate results

Files	Patch %	Lines
src/usage.ts	0.00%	5 Missing ⚠️
src/types.ts	0.00%	3 Missing ⚠️

Additional details and impacted files

@@          Coverage Diff           @@
##             main     #40   +/-   ##
======================================
  Coverage        ?   4.46%           
======================================
  Files           ?      13           
  Lines           ?     919           
  Branches        ?      26           
======================================
  Hits            ?      41           
  Misses          ?     866           
  Partials        ?      12           

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[pi0]

Thanks and sorry for all delays!