Add List model

models/list.py

@@ -0,0 +1,12 @@
+from sqlalchemy import Column, String, DateTime, func
+from sqlalchemy.dialects.postgresql import UUID
+from core.database import Base
+
+class List(Base):
+    __tablename__ = "lists"
+
+    id = Column(UUID(as_uuid=True), primary_key=True, default=uuid.uuid4)
+    name = Column(String, nullable=False)
+    description = Column(String)
+    created_at = Column(DateTime, default=func.now())
+    updated_at = Column(DateTime, default=func.now(), onupdate=func.now())