Allow the Source Editor Vue component install extensions

What does this MR do and why?

The MR extends the functionality of the existing Vue component for the Source Editor to allow the setup of the extensions as the component's prop.

Screenshots or screen recordings

No visual changes.

How to set up and validate locally

Numbered steps to set up and validate the change are strongly suggested.

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• I have evaluated the MR acceptance checklist for this MR.

Related to #351761 (closed)