Rewrite route group option to support load files

[bim-g]

This option will help to resolve the problem of including files and we lost the middle shared inside the group route.

• The first step consists of creating a class to register files to load on the routes files
• rewrite groupe route method to support string as callback
• add method to access app base path
• add method on application class to register web route and API route
• remove all include function to load routes file and rename router directory to routes