refactor: remove legacy evaluation route and update user management interfaces

- Deleted the obsolete evaluations route to streamline the API.
- Added User and UserFormData interfaces to admin-client for better user management.
- Updated useUsersManagement hook to utilize adminClient for fetching and creating users, improving data handling.
- Cleaned up unused imports and code for better maintainability.

app/api/skills/route.ts

@@ -1,6 +1,5 @@
 import { NextResponse } from "next/server";
 import { SkillsService } from "@/services";
-import { SkillCategory } from "@/lib/types";
 
 export async function GET() {
   try {