Update Explorer double click up

[Alfakynz]

Changelog

• Add settings to change the action on double click (default action: up)
• Add the mkdir action to make a directory

Mod authorship

If this pull request introduces a new mod, please complete the section below.

This mod was created by:

• • The submitter, without AI assistance
• • The submitter, with AI assistance
• • Claude
• • ChatGPT
• • Gemini
• • Another AI (please specify):
• • Other (please specify):

Please select the options that best apply. Your selection does not affect the acceptance criteria, but it helps reviewers understand the context of the code and provide relevant feedback.

[m417z]

Now merged as part of the Click on Empty Explorer mod: #4500.