docs: update Learning Hub for Copilot CLI v1.0.15–v1.0.16 changes (#1273)

- Add PermissionRequest hook event to automating-with-hooks.md with
  practical CI example (new in v1.0.16)
- Add Ctrl+Q / Ctrl+Enter queue shortcut note to copilot-configuration-basics.md
  (Ctrl+D no longer queues as of v1.0.15)
- Add extraKnownMarketplaces config setting to installing-and-using-plugins.md
  (old 'marketplaces' setting removed in v1.0.16)
- Update lastUpdated dates on all three files

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

website/src/content/docs/learning-hub/copilot-configuration-basics.md

@@ -3,7 +3,7 @@ title: 'Copilot Configuration Basics'
 description: 'Learn how to configure GitHub Copilot at user, workspace, and repository levels to optimize your AI-assisted development experience.'
 authors:
   - GitHub Copilot Learning Hub Team
-lastUpdated: 2026-04-01
+lastUpdated: 2026-04-02
 estimatedReadingTime: '10 minutes'
 tags:
   - configuration
@@ -457,6 +457,8 @@ The `/share html` command exports the current session — including conversation
 
 The exported file contains everything needed to view the session without a network connection and can be shared with teammates or stored for later reference. This complements `/share` (which shares via URL) for cases where an offline or attached format is preferred.
 
+**Keyboard shortcuts for queuing messages**: Use **Ctrl+Q** or **Ctrl+Enter** to queue a message (send it while the agent is still working). **Ctrl+D** no longer queues messages — it now has its default terminal behavior. If you have muscle memory for Ctrl+D queuing, switch to Ctrl+Q.
+
 The `/allow-all` command (also accessible as `/yolo`) enables autopilot mode, where the agent runs all tools without asking for confirmation. It now supports `on`, `off`, and `show` subcommands:
 
 ```