[tools] Generate boiler plate of requests on client side

In the header for each request a method is created, with following
features:
* ignores requests working as destructor
* adjusts return type for requests containing newId
* adds QObject *parent = nullptr for requests containing newId
* adds the arguements
* turns arguments from wayland into Qt types

In the cpp the same logic is applied. Methods are not properly
implemented and won't compile in the case of returning.