Add User Profile/Settings Feature and Enhance User Account Deletion

[nhatminh23-03]

This pull request includes the following changes:

• Created the profiles table with a unique user_id tied to the users table and enforced unique email constraint.
• Enhanced the deleteAccount function to ensure all associated profiles and bookmarks are deleted when a user is deleted.
• Implemented full CRUD operations for user profiles, including createProfile, getProfile, and updateProfile endpoints.
• Added validation for profile inputs using Joi, ensuring proper email format and valid URLs for profile pictures.
• Integrated the profile routes into the main user routes for access and operations.

These changes aim to improve user management and ensure data integrity across the application.