Support C/C++ macro and function prototype declarations

[mike325]

Macros and functions prototypes declarations are mark as references or not find at all

// Basic function prototyping
// <RETURN_TYPE> <function_name>(<args>);

void foo(...);
int foo(int m, float p);
CustomType foo(CustomType object, long m);
std::string foo(std::string object, long m);
auto foo(auto m);
float* foo();

// Basic macro definition
// #define NAME VALUE
#define MACRO_EX 1
#define MACRO_EX_2(x) func_call(x)

[pechorin]

Will add this in next releases, but language syntax additions not in current milestone :) (but any can help)
I should write guide.

[mike325]

With a guide of how to extend definitions/references I could take a look and
make a PR to improve C/C++ cases 👍