ENH: Update extension metadata

[jcfr]

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

[jcfr]

@rherrick @skumar221 Would be great if this could be reviewed & integrated 🙏

cc: @lassoan @pieper

[jcfr]

Please, could this be reviewed & merged 🙏

[jcfr]

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

Subject: Help to merge https://github.com/NrgXnat/XNATSlicer/pull/3

Hi Rick,

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

  ENH: Update extension metadata
  https://github.com/NrgXnat/XNATSlicer/pull/3

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

Thanks
J-Christophe

[jcfr]

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