ENH: Update extension metadata

[jcfr]

Consolidate extension metadata based on the corresponding s4ext file organized
in the ExtensionsIndex repository.

[jcfr]

Please, could this be reviewed & merged 🙏

[jcfr]

Email sent on June 13th 2024 to @tkapur and @gpernelle with @lassoan and @pieper in cc:

Subject: Help to maintain the Slicer extension "NeedleFinder"

Hi Tina and Guillaume, 

Should we ensure Slicer core developers are granted admin access to the corresponding organization and/or archive the associated extension & repository ?

In a nutshell, we would need help to merge the following pull requests:

   ENH: Update extension metadata
   https://github.com/needlefinder/NeedleFinder/pull/2

   Use markup ROI instead of the deprecated annotation ROI
   https://github.com/needlefinder/NeedleFinder/pull/1

Thanks for the help,
J-Christophe