Create the skeleton of the gateway server.

[nstarlike]

This project is for the API gateway which plays the role of sending a request to the proper service. We can create this project with the Spring Cloud.

The following list below is what you should do.

1. Create a Spring Boot project through the Spring Initializr with the Maven option and the Spring Web dependency.
2. Write a controller to test if it works.
3. Test the endpoint.

That's it for now.