Chore: Import tables_agent from inference (#2087)
Related to https://github.com/Unstructured-IO/unstructured/issues/2028
Import `tables_agent` from inference and don't init in unst again
copy the same logic from
[`interpret_table_block`](https://github.com/Unstructured-IO/unstructured-inference/blob/main/unstructured_inference/inference/layoutelement.py#L89)
(currently deprecated).
