add authorization and admin role

models.py

@@ -17,6 +17,14 @@ class PowerRatio(enum.Enum):
     ELECTRIC_GREATER = "ЭД > ДВС"
     NA = "не применимо"
 
+class Admin(Base):
+    __tablename__ = "admins"
+    
+    id = Column(Integer, primary_key=True, index=True)
+    username = Column(String, unique=True, index=True)
+    hashed_password = Column(String)
+    is_active = Column(Boolean, default=True)
+
 class Car(Base):
     __tablename__ = "cars"