CONTRIBUTING, add link for microsoft style code

[cristian-programmer]

good day
it would be good if an official link of the microsoft code style was added, I reviewed it by google but I found code style for c # and c ++, but not for c.

thanks.

[RossComputerGuy]

Should also mention the Intel Syntax for assembly

[sleepy-monax]

I will add a pre-made clang-format file a the root of the repo with BasedOnStyle: Microsoft
But if you use vscode with the c/c++ extension, the "format document" action format files in this coding style by default.