feat: add referral code system

auth/v1/msg.proto

@@ -43,6 +43,7 @@ message PermissionList {
 
 message UserSendOtpReq {
   string mobile = 1;
+  string referral_code = 2;
 }
 message UserSendOtpRes {
   int64 expired_at = 1;
@@ -55,6 +56,7 @@ message UserSendOtpRes {
 message UserLoginReq {
   string mobile = 1;
   string otp_code = 2;
+  string referral_code = 3;
 }
 message UserRefreshTokenReq {
   string refresh_token = 1;
@@ -128,6 +130,7 @@ message User {
   string email = 4;
   UserStatus status = 5;
   repeated int64 roles = 6;
+  int64 referrer_user_id = 7;
 }
 
 message UserAddress {
@@ -185,6 +188,7 @@ message UserIdentityBasic {
   string first_name = 4;
   string last_name = 5;
   string wallet_address = 6;
+  bool is_identity_verified = 7;
 }
 
 message UserUpdateIdentityReq {