feat: add gacha service

imphnen-iam-service/src/v1/roles/roles_enum.rs

@@ -4,6 +4,7 @@ use std::fmt;
 pub enum RolesEnum {
 	Admin,
 	User,
+	Student,
 	Staf,
 }
 
@@ -12,6 +13,7 @@ impl fmt::Display for RolesEnum {
 		let roles_str = match self {
 			RolesEnum::Admin => "Admin",
 			RolesEnum::User => "User",
+			RolesEnum::Student => "Student",
 			RolesEnum::Staf => "Staf",
 		};
 		write!(f, "{}", roles_str)