feat: add gender field

app/api/v1/schema/user.py

@@ -4,6 +4,7 @@ from apiflask.fields import String, Float, URL, Boolean
 
 class UserInfoIn(Schema):
     nickname = String()
+    gender = String()
     height = Float()
     is_hidden_weight = Boolean()
 
@@ -15,6 +16,7 @@ class UserIdIn(Schema):
 class UserInfoOut(Schema):
     user_id = String(attribute='_id')
     nickname = String()
+    gender = String()
     avatar_id = String()
     avatar_url = URL()
     height = Float(allow_nan=True)