feat: add mirror dropdown

[bigint]

What does this PR do?

🤖 Generated by Copilot at e88a46f

Refactored the Mirror component to be part of a ShareMenu component that provides a dropdown menu for updating and viewing publication mirrors. Moved and renamed some files and components to improve the folder structure and code readability. Fixed some minor props ordering issues.

Related issues

Fixes # (issue)

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Enhancement (non-breaking small changes to existing functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

Explanation of the changes

🤖 Generated by Copilot at e88a46f

• Create a ShareMenu component that wraps the Mirror component in a dropdown menu (link, link, link)
• Move the Mirror component to a subfolder and refactor it to render a Menu.Item instead of a motion.button (link, link, link, link, link)
• Update the mirrors field of the publication when creating a mirror (link)
• Move the static prop of the Menu.Items component to the end of the props list in Attachment.tsx (link)

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Name	Status	Preview	Updated (UTC)
prerender	✅ Ready (Inspect)	Visit Preview	Jun 7, 2023 2:11pm
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