Add CHMv2 (#44595)
* first draft changes for chmv2 integration
* changes to reproduce depth outputs
* reproducing the outputs
* repro at a <1cm level
* cleanup doc
* refactor chmv2 and dinov3 vit backbone
* Add model doc
* Simplify conversion file
* Update docs
* fix-repo
* Fix docs
* Update checkpoints, fix docs, fix check config docstring python 3.11+
* Address PR review
* run_slow
* slightly relax integration test
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Co-authored-by: seungeun user <seungeun@seungeun-login-0.seungeun-login.tenant-slurm.svc.cluster.local>
Co-authored-by: seungeun user <seungeun@seungeun-gpu-login-0.seungeun-gpu-login.tenant-slurm.svc.cluster.local>
