Beekeepy: Add session holder class and session token handling

Bug fixed

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Issue [if exist]

Adds missing functionality of adding session token to api calls

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How it was fixed?

Added class that holds session token and derived over it Beekeeper and AsyncBeekeeper

FYI: @wkedzierski

is it ok for you or makes your implementation harder?

Requires: schemas!91 (merged)

helpy/_handles/abc/handle.py

@@ -123,7 +123,7 @@ class AbstractHandle:
         parsed_response = json.loads(response)
 
         if "error" in parsed_response:
-            raise RequestError(send=params, error=str(parsed_response["error"]))
+            raise RequestError(send=params, error=parsed_response["error"])
 
         if "result" not in parsed_response:
             raise MissingResultError