basic stracture and auth

in memory db :)

apps/admin/src/lib/database.ts

@@ -0,0 +1,23 @@
+export interface User {
+  id: string
+  email: string
+  firstName: string
+  lastName: string
+  password: string
+  phone?: string
+  role: 'admin' | 'client'
+  createdAt: Date
+  updatedAt: Date
+}
+
+export interface Client {
+  id: string
+  userId: string
+  membershipType: 'basic' | 'premium' | 'vip'
+  membershipStatus: 'active' | 'inactive' | 'expired'
+  joinDate: Date
+}
+
+// In-memory database
+export const users: User[] = []
+export const clients: Client[] = []