Ticket_processEdoc start of implementation

[FarahHourani]

This just the main code to send Ticket_ProcessEdoc request and here's an examples of how to send this msg :

use Amadeus\Client\RequestOptions\TicketProcessEdoc;

$data = new TicketProcessEdoc([
  'ticketNumber'    =>'5125756077483',
  'messageFunction' =>TicketProcessEdoc::ETKT
]);

$Eticket =  $client->ticketProcessEdoc($data);

[coveralls]

Coverage decreased (-0.4%) to 99.427% when pulling 1a14b3a on FarahHourani:master into 7f90b0b on amabnl:master.

[DerMika]

Thanks again for your contribution!