Adding Tokenizer, a flex file that parses various tokens for C--

This lab was a bit simple, only required that we define the logic to
recognize a variable ID, an integer, a float, and a comment.
The comment was by far the most tricky. Floats weren't bad. Learned
that you cannot link to lex definitions together and have it
evaluate it as if it was one item.
E.g. Digit [0-9] and Alpha [A-Za-z_] cannot be combined as
     {Alpha}{Digit} with the goal of having [A-Za-z_0-9]

Lab 2 Token Project for