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=1.144e-05; Maximum converted output difference=1.144e-05.

tf_model.h5

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:37d45bf7c11607c5df782ef613f711ccf8b5a9af5ae6ceffc2e5da8aae191096
+size 439304476