Print Fomos Kernel (printfk) is a replacement for the Rust println macro in FOMOSv2 and applications or commands. How
the printfk macro is called is a lot different compared to how printf is called. printf is an external function so it
needs to be called with unsafe, then calls as_ptr then sets the string as a c_char. printfk does all of this for you and
adds \n\0.

Example:

    printfk!("Hello world!");

Here there is one line of code and one argument, with the printf function you need to write at least two long lines of
code and give more than one argument. Calling printfk is a lot easier and faster to write compared to printf.