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 12th 2024 to @MarinaSandonis with @lassoan in cc:

Subject: Help to merge https://github.com/MarinaSandonis/SlicerTissueSegmentation/pull/2

Hi Marina,

When you have a chance, we would appreciate your help to merge the following pull request:

  ENH: Update extension metadata
  https://github.com/MarinaSandonis/SlicerTissueSegmentation/pull/2

Changes are trivial as they only include updates to the extension metadata.

Thanks
J-Christophe

[jcfr]

@MarinaSandonis Thanks for taking the time to follow-up 🙏 🚀