feat(projects): Implement project CRUD API endpoints

[Zafar7645]

User Story: As a logged-in user, I want to be able to create, view, edit, and delete my projects.

Acceptance Criteria:

• Create a ProjectsModule in the NestJS backend.
• Implement a POST /projects endpoint to create a new project (requires name, optional description). Associate it with the authenticated user.
• Implement a GET /projects endpoint to retrieve all projects belonging to the authenticated user.
• Implement a GET /projects/:id endpoint to retrieve a single project by its ID.
• Implement a PATCH /projects/:id endpoint to update a project's details.
• Implement a DELETE /projects/:id endpoint to delete a project.
• Ensure all endpoints are protected and a user can only interact with their own projects.