feat: python client

[niryuu]

tested on testpypi

https://packaging.python.org/en/latest/tutorials/packaging-projects/
https://stackoverflow.com/questions/34514703/pip-install-from-pypi-works-but-from-testpypi-fails-cannot-find-requirements

item fetch test code:

import reearthcmsapi
from reearthcmsapi.apis.tags import items_api
from reearthcmsapi.model.versioned_item import VersionedItem
from reearthcmsapi.model.asset_embedding import AssetEmbedding
from pprint import pprint
configuration = reearthcmsapi.Configuration(
    host = "http://localhost:8080/api",
    access_token = 'secret_dummy'
)
with reearthcmsapi.ApiClient(configuration) as api_client:
    # Create an instance of the API class
    api_instance = items_api.ItemsApi(api_client)

    # example passing only required values which don't have defaults set
    path_params = {
        'modelId': "dummy",
    }
    query_params = {
    }
    try:
        # Returns a list of items.
        api_response = api_instance.item_filter(
            path_params=path_params,
            query_params=query_params,
        )
        pprint(api_response)
    except reearthcmsapi.ApiException as e:
        print("Exception when calling ItemsApi->item_filter: %s\n" % e)

    # example passing only optional values
    path_params = {
        'modelId': "dummy",
    }
    query_params = {
        'sort': "createdAt",
        'dir': "desc",
        'page': 1,
        'perPage': 50,
        'ref': "latest",
        'asset': AssetEmbedding("all"),
    }
    try:
        # Returns a list of items.
        api_response = api_instance.item_filter(
            path_params=path_params,
            query_params=query_params,
        )
        pprint(api_response)
    except reearthcmsapi.ApiException as e:
        print("Exception when calling ItemsApi->item_filter: %s\n" % e)

[smellman]

LGTM