Contributed Code Filename Scheme

As of now, the contributed code doesn't have a consistent naming scheme. While most author just use the next unused number for their contributed code, it doesn't seem to be strictly followed. Also, there is a problem when there is multiple PR contributing different code with the same name.

What I propose is that we use author's name/pseudonym as the program name followed by a number as differentiator for multiple submission so that it is unambiguous for creating PR. Also putting the author's name in the program's name itself may motivate some people to submit as some form of bragging rights possibly.