feat: updated user model

src/models/user.ts

@@ -1,8 +1,11 @@
 import { ObjectId } from 'mongodb'
+import { UserRole } from '../types'
 
 export class User {
   constructor(
     public name: string,
+    public npub: string[],
+    public role: UserRole,
     public id?: ObjectId
   ) {}
 }

src/types/user.ts

@@ -0,0 +1,5 @@
+export enum UserRole {
+  User = 'user',
+  Reviewer = 'reviewer',
+  Producer = 'producer'
+}