Updating extensions.json

[niels9001]

Extension Submission

Thanks for submitting your extension to the Command Palette Extensions Gallery!
Please fill out the checklist below to help us review your PR quickly.

Checklist

• My folder follows the <author>/<extension-name> convention (lowercase, alphanumeric + hyphens only)
• I have added an extension.json with all required fields
• The id field in my extension.json matches my folder path (author.extension-name)
• I have added an icon file (PNG or SVG, under 100 KB)
• The icon field in extension.json matches my icon filename
• My extension is available at the install source I specified (winget/MS Store/URL)
• I have read the Contributing Guide

Additional context

[Copilot]

Pull request overview

Updates the aggregated Command Palette Extensions Gallery manifest (extensions.json) to reflect newly added extensions and an updated generation timestamp/count.

Changes:

• Updates generatedAt timestamp and extensionCount to match the newly generated gallery.
• Adds multiple new extension entries (IDs, metadata, install sources, icons/screenshots) into the extensions list.

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