feat: Add Protocol for API objects

Fixes some type errors that have been seen by users and in other
internal code. Also makes some methods public that were being used by
QuantinuumBackend and fixes some mismatched types.

pytket/extensions/quantinuum/backends/api_wrappers.py

@@ -79,29 +79,39 @@ class QuantinuumAPIProtocol(Protocol):
 
     def override_timeouts(
         self, timeout: Optional[int] = None, retry_timeout: Optional[int] = None
-    ) -> _OverrideManager: ...
+    ) -> _OverrideManager:
+        ...
 
-    def full_login(self) -> None: ...
+    def full_login(self) -> None:
+        ...
 
-    def login(self) -> str: ...
+    def login(self) -> str:
+        ...
 
-    def delete_authentication(self) -> None: ...
+    def delete_authentication(self) -> None:
+        ...
 
-    def submit_job(self, body: Dict) -> Response: ...
+    def submit_job(self, body: Dict) -> Response:
+        ...
 
     def retrieve_job_status(
         self, job_id: str, use_websocket: Optional[bool] = None
-    ) -> Optional[Dict]: ...
+    ) -> Optional[Dict]:
+        ...
 
     def retrieve_job(
         self, job_id: str, use_websocket: Optional[bool] = None
-    ) -> Optional[Dict]: ...
+    ) -> Optional[Dict]:
+        ...
 
-    def status(self, machine: str) -> str: ...
+    def status(self, machine: str) -> str:
+        ...
 
-    def cancel(self, job_id: str) -> dict: ...
+    def cancel(self, job_id: str) -> dict:
+        ...
 
-    def get_calendar(self, start_date: str, end_date: str) -> List[Dict[str, str]]: ...
+    def get_calendar(self, start_date: str, end_date: str) -> List[Dict[str, str]]:
+        ...
 
 
 class QuantinuumAPI(QuantinuumAPIProtocol):