Unstructured

* Added `translate_text` brick for translating text between languages
* Add an `apply` method to make it easier to apply cleaners to elements

* Added \_\_init.py\_\_ to `partition`

* Implement staging brick for Argilla. Converts lists of `Text` elements to `argilla` dataset classes.
* Removing the local PDF parsing code and any dependencies and tests.
* Reorganizes the staging bricks in the unstructured.partition module
* Allow entities to be passed into the Datasaur staging brick
* Added HTML escapes to the `replace_unicode_quotes` brick
* Fix bad responses in partition_pdf to raise ValueError
* Adds `partition_html` for partitioning HTML documents.

* Small change to how \_read is placed within the inheritance structure since it doesn't really apply to pdf
* Add partitioning brick for calling the document image analysis API

* Update python requirement to >=3.7

* Add alternative way of importing `Final` to support google colab