🚦Issue: Convert Routes to ES6 Module Syntax

[agaesh]

Description

Refactor all route files to use ES6 module syntax for uniformity and compatibility with Express app entry points.

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Routes

• departmentRoutes
• instructorRoutes
• programCourseRoutes
• semesterRoutes
• userRoutes

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Tasks

• Replace require → import
• Replace module.exports → export default
• Update all controller imports with .js extension

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Branch

fix/es6-routes

[agaesh]

Closing the issue as it focus on refactor routes to es6 modules which is sucessfully done