Add 8 bit version of DECID

DECID version for 7 bits environments already was implemented in st.
This patch adds the 8 bit version of it.
Add 8 bit version of NEL

NEL version for 7 bits environments already was implemented in st.
This patch adds the 8 bit version of it.
Add 8 bit version of HTS

HTS version for 7 bits environments already was implemented in st.
This patch adds the 8 bit version of it.
Add 8 bit version of DCS, APC, PM, OSC

DCS, APC, PM, OSC version for 7 bits environments already was implemented
in st.  This patch adds the 8 bit version of it.
added .gitignore file
symlinked config.def.h to config.h
initial commit of my config.def.h
default font is now DejaVu Sans Mono for Powerline