Delete test suite and libtap library
The test suite, as it was, was not very flexible for compilation. But, the biggest reason for this was that libtap wasnt a common lib on repos. Therefore, this wouldn't be a very flexible package. I'll be using a differnet TAP lib
Bring all code to top-level dir

This will ease the GNU autotools transition. Eventually, Ill figure out a way to filter my code back into src/ and include/ directories
Convert Makefile to GNU autotools