Add TF weights

Model converted by the [`transformers`' `pt_to_tf` CLI](https://github.com/huggingface/transformers/blob/main/src/transformers/commands/pt_to_tf.py). All converted model outputs and hidden layers were validated against its PyTorch counterpart.

Maximum crossload output difference=4.649e-06; Maximum crossload hidden layer difference=2.709e-01;
Maximum conversion output difference=4.649e-06; Maximum conversion hidden layer difference=2.709e-01;


CAUTION: The maximum admissible error was manually increased to 0.3!

tf_model.h5

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:4b5c9232dc8b479725c4b81ab61f1f04363c104280683a692a8608f69d4e7230
+size 895599664