added implementation file for texy host
added implementation file for operating system interface abstraction
added members for foreground and background pixels in the type, texy_glyph
deleted renderer-std, rendering will now be done in the graphics library abstraction file
added constructor and deconstructor for osi, gli, and host
cleaned up code and added newline handler for texy_host
deleted texy-renderer.h, font rendering will now be done in the file for graphics library abstraction
added early implementation for glyph coloring
added host member to texy_handle
added new files to the build system