reMenu: A rust-enabled reconfigurable menu

Current status

As of now, I am trying to getter a better understanding of X11. There is no functionality and the code is an absolute mess. Besides the lack of structure and good abstraction, there are other issues:

1. X server objects are never freed.
2. There is unwrap everywhere and no error handling.
3. There are no tests.
4. And yeah, there is no logging.

As I said: This is for learning right now.