### Description
Building off of PR
https://github.com/Unstructured-IO/unstructured/pull/2179, updating
fsspec based connectors to use better authentication field handling.
This PR adds in the following changes:
* Update the base classes to inherit from the enhanced json mixin
* Add in a new access config dataclass that should be used as a nest
dataclass in the connector configs
* Update the code extracting configs out of the cli options dictionary
to support the nested access config if it exists on the parent config
* Update all fsspec connectors with explicit access configs given what
each one's SDKs support
* Update the json mixin and enhanced field to support a name override
when serializing/deserializing from json/dicts. This allows a different
name to be used for the CLI option than what the name of the field is on
the dataclass.
* Update all the writes to use class-based approach and share the same
structure of the runner classes
* Above update allowed for better code to be used in the base source and
destination CLI commands
* Add in utility code around paring a flat dictionary (coming from the
click based options) into dataclass-based configs with potentially
nested dataclasses.
**Slightly unrelated changes:**
* session handle removed from pinecone connector as this was breaking
the serialization of the write config and didn't have any benefit as a
connection was never being shared, the index used simply makes a new
http call each time it's invoked.
* Dedicated write configs were created for all destination connectors to
better support serialization
* Refactor of Elasticsearch connector included, with update to ingest
test to use auth
**TODOs**
* Left a `#TODO` in the code but the way session handler is implemented
right now, it breaks serialization since it adds a generic variable
based on the library being used for a connector (i.e.
`googleapiclient.discovery.Resource`) which is not serializable. This
will need to be updated to omit that from serialization but still
support the current workflow.
---------
Co-authored-by: ryannikolaidis <1208590+ryannikolaidis@users.noreply.github.com>
Co-authored-by: rbiseck3 <rbiseck3@users.noreply.github.com>
