Using C++ on libbpf-tools

[Bojun-Seo]

Hi all,
I'm wondering if it can be possible to use C++ in libbpf-tools.
Every tool is made in C currently. Is there any reason why?

I'm trying to add new feature lsan on libbpf-tools.
#4120
To use stl vector and unordered_map(or map) like feature in C, I introduced c-vector and uthash projects.
If I could use C++, the dependence can be removed easily!