Implement Wishlist Removal

[jocafernanro]

Create an API endpoint to delete an existing wishlist

• AC1. The endpoint accepts a DELETE request with a wishlist's ID.
• AC2. The endpoint correctly removes the wishlist from the database, along with all the associated products
• AC3. The endpoint returns a success message upon successful deletion.
• AC4. If a wishlist with the provided ID does not exist, the endpoint returns an appropriate error message.
• AC5. If a user who is not the owner of the wishlist tries to delete it, the endpoint returns an appropriate error message
• AC6. The endpoint properly handles any exceptions and returns an appropriate error message.