feat: add boards and tasks management endpoints

backend/app/schemas/boards.py

@@ -0,0 +1,26 @@
+from __future__ import annotations
+
+from datetime import datetime
+from uuid import UUID
+
+from sqlmodel import SQLModel
+
+
+class BoardBase(SQLModel):
+    name: str
+    slug: str
+
+
+class BoardCreate(BoardBase):
+    pass
+
+
+class BoardUpdate(SQLModel):
+    name: str | None = None
+    slug: str | None = None
+
+
+class BoardRead(BoardBase):
+    id: UUID
+    created_at: datetime
+    updated_at: datetime