* initial commit python api docs

* formatting update

* update script using ast

* pydantic models field tables

* fixed api docs path

* classes api docs

* classes formatting

* fix to import codecs methods

* fix empty methods, bullets

* update function, class navigation

* types formatting

* types hierarchy fixes

* pydantic model fields tables

* MLServer CLI and more formatting

* cli flags rendering

* add overviews

* summary md clean

* link edit again

* Rename API-Reference.md to api-reference.md

* Remove local environments_dir and metrics_dir defaults

* Remove custom generator script

updated the MLServer CLI command

- Updates required for uvloop >= 0.22.1, following deprecations in the python API
regarding async loop policies.

- Updates to pytest to run tests using async correctly

- Updates to runtimes so that pytest doesn't load the same module (conftest.py)
multiple times. This involves adding __init__.py files in intermediate
directories to explicitly define python packages.

This means that by default we no longer write the uvicorn accesslog to the
log (stdout). It makes sense to move to the new default, as production settings
will not want the verbosity that comes with "debug: True"

* Cleanly remove metrics db files created by prometheus

Until now, multiple workers were competing on deleting the files, and some were
inevitably failing with "FileNotFound" errors.

* Fix deprecated poetry usage in runtimes tox.ini

In hack/build-wheels, only consider the directories from
MLServer/runtimes (we've added an __init__.py file for pytest)

- update deprecated argument to preflight cli