Refactor assembly language detection

[donno2048]

Pretty much refactor the entire assembly language detection

Checklist:

• I am adding a new extension to a language.
  • The new extension is used in hundreds of repositories on GitHub.com
    • Search results for each extension:
      • https://github.com/search?type=code&q=NOT+is%3Afork+path%3A*.s+%22org%20100h%22
  • I have included a real-world usage sample for all extensions added in this PR:
    • Sample source(s):
      • https://github.com/donno2048/snake/blob/master/snake.asm
    • Sample license(s): it's code I wrote just because literally every .asm file could serve the same purpose as a .s and that's the first that came to my mind... You can use it however you want as long as you don't pretend you wrote it...
  • I have included a change to the heuristics to distinguish my language from others using the same extension.

[lildude]

See inline comment.

[donno2048]

@lildude fixed

[donno2048]

I'll delete Assembly/audio.i and Assembly/macros.inc as they both are not nasm assembly so will create false-negative