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/beekeeper/api/session_holder.py

@@ -9,7 +9,7 @@ class SessionHolder:
         self.__session_token: str | None = None
         super().__init__(*args, **kwargs)
 
-    def __is_session_token_set(self) -> bool:
+    def is_session_token_set(self) -> bool:
         return self.__session_token is not None
 
     @abstractmethod
@@ -18,7 +18,7 @@ class SessionHolder:
 
     @property
     def session_token(self) -> str:
-        if not self.__is_session_token_set():
+        if not self.is_session_token_set():
             self._set_session_token()
         assert self.__session_token is not None
         return self.__session_token