feat: roles system backend

internal/infrastructure/persistence/models/userModel.go

@@ -13,6 +13,7 @@ type User struct {
 	DisplayName             string  `gorm:"not null;default:'';size:255"`
 	IsVerified              bool    `gorm:"default=false;not null"`
 	Role                    string  `gorm:"not null;default:'';size:32"`
+	RoleID                  *uint32 `gorm:"index"`
 	VerificationCode        *string `gorm:"unique;size:255"`
 	VerificationExpiration  time.Time
 	PasswordResetExpiration time.Time