fix: send the properly formatted options from the CLI to electron-osx-sign

[jhen0409]

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Summarize your changes:

Fix osx-sign can't get correctly sub properties, just use osx-sign arg instead of osxSign.

For yargs-parser, use camel case of args is meaning the subprops will be also converted to camel case, but it will break the osx-sign usage like entitlements-inherit.

[malept]

Thanks for the pull request. The fix is in the wrong place, as this affects the CLI only, and there needs to be a regression test added (to test/cli.js). If you can get these things done, we can merge this.

[codecov-io]

Codecov Report

Merging #1047 into master will not change coverage.
The diff coverage is 100%.

@@          Coverage Diff           @@
##           master   #1047   +/-   ##
======================================
  Coverage     100%    100%           
======================================
  Files          14      14           
  Lines         689     691    +2     
======================================
+ Hits          689     691    +2

Impacted Files	Coverage Δ
src/cli.js	100% <100%> (ø)	⬆️

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