feat: org status check in auth dependencies

There is a hardcoded list of methods/endpoints for which the status check isn't done. i.e. the endpoints which need to be accessed before the org is approved.

Resolves #11

src/organisation/exceptions.py

@@ -17,3 +17,11 @@ class OrgNotFoundException(HTTPException):
 			status_code=status.HTTP_404_NOT_FOUND,
 			detail=detail,
 		)
+
+class AwaitingApprovalException(HTTPException):
+	def __init__(self, org_id: Optional[int] = None) -> None:
+		detail = "Organisation has not been approved." if org_id is None else f"Organisation with ID '{org_id}' has not been approved."
+		super().__init__(
+			status_code=status.HTTP_401_UNAUTHORIZED,
+			detail=detail,
+		)