Implement Authentication in Post Routes

[NeyuD96155]

Problem:
The current routes for creating, updating, and deleting posts do not require authentication, allowing anyone to perform these actions.

Proposed Change:

• Implement a JWT-based authentication middleware.
• Apply this middleware to the POST, PATCH, and DELETE routes for posts to ensure that only authenticated users can make these requests.

Expected Outcome:
Increased security by ensuring that only logged-in users can create, update, or delete posts.