Inlay hints for macros

Feature Request

Consider following code

void a(int aa, int bb, int cc, const char *file);

#define b(x, y, z) a(x, y, z, __FILE__)

int main()
{
	a(1, 2, 3, "a.cpp");
	b(4, 5, 6);
}

currently the inlay hints don't work for b() macro call inside main():

expected behaviour:

1. show inlay hints for b call so that it looks something like this: b(x: 4, y: 5, z: 6)
2. nice to have: show inlay hints inside macro declarations, so that macro definition looks like this:
   #define b(x, y, z) a(aa: 1, bb: 2, cc: 3, file: __FILE__)

Start by locating the existing inlay-hint handling for C++ function calls and how macro expansions are represented. Compare the direct call with the b() macro call, then determine how tests for inlay hints can cover argument labels at macro call sites and, if supported, inside macro declarations.