Create Travel Advisor RESTful APIs

[mohamed-taman]

1. The administrator can:
   • Add cities. For each city, the name, country, and description must be provided.
   • Import the data for the airports and routes from the datasets given in an attachment.
2. Regular user can:
   • Get all the cities (all the comments should be returned, or if specified, only the x latest comments).
   • Search for cities by name (all the comments should be returned, or if specified, only the x latest
     comments).
   • Add, Delete Update comment for the city.
   • Traveling from city A to B.