Adding gitqlient

[francescmaestre]

Describe your changes

Adding GitQlient plugin to the extension registry.

Checklist

• I have run npm run all to validate my changes
• I have made sure my commits are signed
• I have added an entry for new Extensions in CODEOWNERS

[CLAassistant]

Thank you for your submission! We really appreciate it. Like many open source projects, we ask that you sign our Contributor License Agreement before we can accept your contribution.

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[Maddimax]

Thank you very much for your contribution! We are still not quite done with all the legalese, but as soon as that is done we will merge your request.