Add GRACE-2L-SMAX-OMAT medium+large UQ models + checkpoints

checkpoints/GRACE-2L-SMAX-OMAT-large-checkpoint.tar.gz

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+oid sha256:745b368260eeb9db80ab5566408a9d53d5297d84ddecf4c5bfa1de1fa8f32ba2
+size 246750886

checkpoints/GRACE-2L-SMAX-OMAT-medium-checkpoint.tar.gz

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+version https://git-lfs.github.com/spec/v1
+oid sha256:8070189d195a56803ea0fb88340365e8b36fc1d6f3b0135456c76a61156d439a
+size 208147889

models/GRACE-2L-SMAX-OMAT-large-model.tar.gz

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 version https://git-lfs.github.com/spec/v1
-oid sha256:cf0b0f3723fe5028a92cf772b650e54d7ce43bfcf2af74e758853ebea27847d1
-size 431908775
+oid sha256:5b9b683d51eaff154aedc2e0b70181950b22f8b6ff58dd5a068c9ab6f69f8fd5
+size 447966678

models/GRACE-2L-SMAX-OMAT-medium-model.tar.gz

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 version https://git-lfs.github.com/spec/v1
-oid sha256:720ef99df21277b971010075ccb2bd585fbf66a45fcbc4660ea0d2736d3bba53
-size 356188293
+oid sha256:5deb4bca74833f35a4060b8f53b40866a2007d9b997900bfbea2d50730bee03a
+size 371871836