Added the ability for a perl module to return more values per call;
An object of type Sidef::Types::Array::Array will be returned containing the non-objectified returned values;
This feature can be imposed by used the ':' sign at the end of a function/method call;

Asumming that 'resp' is an object returned by LWP::UserAgent->get($url):

If we say:
   resp->get_content()    # returns a perl-string

but, when we say:
   resp->get_content:()   # returns a sidef array contains the perl-string