Discord code review

[xslendix]

• [X] Split the main.c file into multiple files, inside something like a src folder.
• [X] Remove the old_cupidfetch.c file, if you want the old version just use Git to get it.
• [x] Define anything that does not change as const and maybe static.
• [ ] Fix inconsistent styling with something like clang-format.
• [x] Prefix global variables with something like g_.
• [x] Avoid using popen for simple stuff like getting the shell which can be done with geteuid. For the package count, it looks fine to me tbh but there may be a better way of doing things.
• [x] Be careful with null-terminated strings, or don't use them entirely. There is a potential bug in OS detection when parsing the ID= in which, if there is no newline, some UB may happen.
• [x] When detecting desktop environment, you would iterate through all the processes and check the binary name.

[arthurbacci]

Why is inconsistent styling bad?

[xslendix]

Why is inconsistent styling bad?

Codebase is harder to read and maintain, automated tools can be less effective etc.