Feat: autogenerate id for student if none is given

backend/model/student.py

@@ -1,7 +1,10 @@
 from __future__ import annotations
 
+import uuid
 from dataclasses import dataclass
-from typing import TYPE_CHECKING
+from typing import TYPE_CHECKING, Optional
+
+from pydantic import Field
 
 if TYPE_CHECKING:
     from backend.model.tribe import Tribe
@@ -9,9 +12,9 @@ if TYPE_CHECKING:
 
 @dataclass
 class Student:
-    id: str
     name: str
     tribe: Tribe
+    id: Optional[str] = Field(default_factory=lambda: str(uuid.uuid1()))
 
     def __post_init__(self) -> None:
         self.tribe.register_student(self)