Add action for opening settings directory in file explorer

[e82eric]

Most of the logic is taken from the original PR (https://github.com/microsoft/terminal/pull/15417) and adapted to work with the palette.

I added 2 additional actions, send settings file path as input and copy settings file path to clipboard. (Totally understand if these should be removed)

Summary of the Pull Request

References and Relevant Issues

#12382

Detailed Description of the Pull Request / Additional comments

Validation Steps Performed

PR Checklist

• [ ] Closes #xxx
• [ ] Tests added/passed
• [ ] Documentation updated
  • If checked, please file a pull request on our docs repo and link it here: #xxx
• [ ] Schema updated (if necessary)

[DHowett]

Sorry for the delay! We've been understaffed this week 🙂

[e82eric]

No worries, no rush on my end.

[e82eric]

Thanks for being so patient with us. Sorry it's taken us a long time to get to it.

Got a chance to discuss this with the team. We're interested in being able to open the settings directory, but not the sendInput or clipboard ones as they may be too niche.

Sounds good! updated.

[carlos-zamora]

Gif removed from PR body:

[lhecker]

Was there a reason why we didn't merge this?

[carlos-zamora]

/azp run

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