First commit for product microservice. It consists of 3 pages and 4 functions:...

First commit for product microservice. It consists of 3 pages and 4 functions: The first function displays products by category on the home page. The second function displays a product on another page after it has been clicked on. It displays the product name, price, image, description and reviews, and the product id is sent through a get request. The third function communicates with the user microservice to get a user's username when they want to add a review. And the fourth function inserts the product review and username gotten from the user microservice into the product reviews table when a user adds a review