Restructure and rename

This moves all code into the esap_client package to avoid name clashes with other code (e.g. esap-general#86 (closed)). It uses inheritance to reduce duplication. It makes a few small changes to make the class names idiomatic (ie, using CamelCase).

This is a breaking API change! Closes #86.

esap_client/shopping_client.py

@@ -13,6 +13,7 @@ import requests
 
 logger = logging.getLogger(__name__)
 
+
 def is_valid_token(token: str) -> bool:
     """Check that the given token has not expired"""
     try:
@@ -146,13 +147,13 @@ class ShoppingClient:
                     warn(
                         f"Connector {connector.name} specified but no data found for it "
                         f"in shopping basket. Result will not contain an entry named {connector.name}."
-                        )
+                    )
 
             return {
                 name: data.to_frame().T if data.ndim < 2 else data.T
                 for name, data in converted_basket.items()
             }
-            
+
         warn(
             "No archive connectors specified - could not convert any basket items to Pandas DataFrame"
         )
@@ -177,7 +178,9 @@ class ShoppingClient:
                     headers={"Authorization": f"token {jh_api_token}"},
                 )
 
-                if is_valid_token(token := res.json()["auth_state"]["exchanged_tokens"][self.audience]):
+                if is_valid_token(
+                    token := res.json()["auth_state"]["exchanged_tokens"][self.audience]
+                ):
                     return token
         except KeyError:
             logger.warning("JupyterHub without Authstate enabled")