Add Simple CRUD Example Using File-Based Routin

[Amanbig]

Problem

New users may find it difficult to understand how file-based routing works without a concrete example.

Expected Behavior

Provide a simple CRUD example demonstrating:

• Folder-based routing
• HTTP methods (GET, POST, PUT, DELETE)

Suggested Approach

• Create an example under examples/basic-crud
• Add brief comments explaining routing

Difficulty

Easy