Initial Switch to V2. Completely Overhauled Backend, Frontend and General Structure.

backend/shared/exceptions.py

@@ -18,3 +18,8 @@ class AuthorizationError(HTTPException):
 class NotFoundError(HTTPException):
     def __init__(self, resource: str = "Resource"):
         super().__init__(status_code=404, detail=f"{resource} not found")
+
+
+class ValidationError(HTTPException):
+    def __init__(self, detail: str = "Validation error"):
+        super().__init__(status_code=422, detail=detail)