C-style Type Declaration

[Willie169]

It will be easier for users from C/C++ to use type hint of Python if Bython supports the conversion from C-style type declaration to Python type hint. For example:
C-style type declaration:

int add(int x, int y) {
    return x + y;
}

Python type hint:

def add(x: int, y: int) -> int:
    return x + y

[ViktorPopp]

But that would basically make a C interpreter.

[Willie169]

I've made PR that solve pass problem, add C-style comments and type declarations.
#55