Split bric.c and bric.h into multiple files

[shnupta]

Split the header and source file into files based on their implementations such as low level terminal handling, movement etc...

[vineethkartha]

I can wok on this. Do you have a specific plan in mind with regards to rearchitecting the project or do you just want to move the code

[kouraf]

i wanna work on this , but i'm a little newbie :'( !

[frags51]

Check out my PR #97