ENH: Add 10 CID blobs for issue ITK#6412 sha512->cid swap

Mirrors the 12 .sha512 content links from
Modules/{Filtering/ImageStatistics, Filtering/Thickness3D,
Registration/VariationalRegistration, Segmentation/GrowCut}
back to .cid (DzZ_T1.seg.nrrd is shared, so 11 unique CIDs
minus 1 already present = 10 new files).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: thewtex