* Add --only-models-matching-regex option
to `models import` which only processes models where
`litelllm_params.model` matches the regex
* Add test_models_import_only_models_matching_regex
* Print each model we're importing
* Add --only-access-groups-matching-regex option
to `models import` which only processes models where at least one item
in `model_info.access_groups` matches the regex. Add a unit test.
* Add `models import` examples to README.md
Add `models import` examples to proxy/client/cli/README.md
* ruff format litellm/proxy/client/cli/commands/models.py
* Make `models import` display tabular output
* models import refactoring
* Fix failing tests in test_models_commands.py
* Refactor import_models to make it shorter and more readable
* Extract from `import_models` a function called `get_model_list_from_yaml_file`
* Fix mypy error
* Add more specific typing
for better understandability and Intellisense
* More import_models refactoring
* More refactoring
* More refactoring
* Write unit tests for format_iso_datetime_str
* Add more unit tests
* ruff format tests/litellm/proxy/client/cli/test_models_commands.py
* ruff format litellm/proxy/client/cli/commands/models.py
* Make test_format_timestamp use UTC time