Add “controller” and “action” variables as aliases of respectively “_call” and “_able”.
Add “controller” and “action” variables as aliases of respectively “_call” and
“_able”.

In Hoa, a callable object (Hoa\Core\Consistency\Callable) allows to call any PHP
“object” (class, object, function, closure, even stream, event etc.). This is
why the router defines the “_call” and “_able” variable (as a standard of Hoa).
But for the need of semantics claimed by community, we add the “controller” and
“action” variables as aliases of these previous ones.
Thus, the router's rule pattern:
    (?<controller>\w+)/(?<action>\w+)
is strictly equivalent to:
    (?<_call>\w+)/(?<_able>\w+)

Metalaka/Central,vcgato29/Central,Grummfy/Central,Metalaka/Central,Grummfy/Central,vcgato29/Central