option to do pdg with <timeout> about r2ghidra HOT 5 CLOSED

Hi, I attach to this mail the final version i am using to add timeout to pdg. As you can see in the attached file I didn't address most of your request regarding improvements: - I still have pdgt instruction rather than a radare2 variable. Moreover I made another change that I don't think you will approve. I changed the pdgt prints from r_core_annotated_code_print to console fprintf. This causes the prints to be less human readable with no colors. The reason I did this modification is that it seems that i get a memory leak in the previous mentioned version. The only way to solve this problem was to ensure the child thread exit. But on child exit, output of the child thread will not be displayed if you rely on r_core_annotated_code_print [which prints just on a clean return] just on fprintf. I use this version and I am happy with the results but as I understand this version does not meet commits standards.