Refactor project code architecture (#21)

Refactor the structure of the project by moving functions and resources in corresponding packages.

Change the way properties are read. And gives responsibility to packages.

Add the actions.go file to the main package

Introduce Decision Making tree to be based on actions hierarchy

Documentation of actions.go code

Add the permission EmptyPermission

Implement the interface PermissionRequester

Make action's resolver case insensitive and action's parameters case sensitive

Refactor TryGetQuoteFromMessage to GetQuoteFromMessage

Update developers documentation