Sublime Text 4: How to highlight C++ class/struct names and typedef, using and #define aliases?

Question

I want the C++ STL data structures, as well as my self-defined classes/structs and aliases, to be highlighted as a primitive type like int or double, in a different color.

In particular, I want these to be highlighted:

using int64 = long long;
#define pb push_back

int main() 
{
    std::vector<int64> a = {1,2,3}; // hightlight std::vector and int64.
    a.pb(5) // highlight pb.      

    return 0;
}

I have already found this post: Sublime Text - C++ Highlight

But when I tried to do the similar things to the accepted answer in the post, where they said that I should install Package Control, then PackageResourcesViewer, then choose Open Resources -> C++ -> C++.tmLanguage, in Sublime Text 4, I could not find any files with such name.

So, how can I reach my goal?