Integrate gsplat into meshroom#1

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Alxiice wants to merge 11 commits intomainfrom

dev/sfm_importer

Commits on Jun 25, 2025

update matching rez package gsplat develop
Matthieu Hog
committed

Commits on Aug 6, 2025

Commits on Nov 3, 2025

(wip) Add script for cleaning splats
Alxiice
committed