Feedback: Customize Extension Library
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## Description
This will be a feedback issue to receive customer feedback on the "[customize extension library](https://docs.gitlab.com/administration/settings/vscode_extension_marketplace/#customize-extension-registry)" feature that came out in GitLab 17.8
## Questions to help guide feedback
* What is broken?
* What do you feel is missing?
* Is there functionality you would like to see?
* How is the overall performance?
* Any other feedback you have!
Answering these would be immensely helpful but feel free to include any other feedback! :meow-blob-pray:
issue