Add TF weights

Model converted by the `transformers`' `pt_to_tf` CLI -- all converted model outputs and hidden layers were validated against its Pytorch counterpart. Maximum crossload output difference=2.337e-05; Maximum converted output difference=2.337e-05.

tf_model.h5

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:618027aa442a6fa0262dc0a18a5f4c8aa155b3bdbd2bcf5bc5098e5edac26133
+size 498878272