add manage domain function

backend/app/db/models.py

@@ -183,6 +183,18 @@ class UserDomain(Base):
     createuser = relationship('User',foreign_keys=[createuserid]) 
     updateuser = relationship('User',foreign_keys=[updateuserid]) 
 
+class ManageDomain(Base):
+    __tablename__ = "managedomain"
+
+    userid = mapped_column(Integer,ForeignKey("user.id"))
+    domainid = mapped_column(Integer,ForeignKey("domain.id"))
+    createuserid = mapped_column(Integer,ForeignKey("user.id"))
+    updateuserid = mapped_column(Integer,ForeignKey("user.id"))
+    domain = relationship("Domain")
+    user = relationship("User",foreign_keys=[userid])
+    createuser = relationship('User',foreign_keys=[createuserid]) 
+    updateuser = relationship('User',foreign_keys=[updateuserid]) 
+
 class Event(Base):
     __tablename__ = "event"