Rewrote .gitignore

Signed-off-by: Tushar Pankaj <tushar.s.pankaj@gmail.com>
Created basic CMake project

Signed-off-by: Tushar Pankaj <tushar.s.pankaj@gmail.com>
Created basic program structure

Signed-off-by: Tushar Pankaj <tushar.s.pankaj@gmail.com>
Started writing uart code

Signed-off-by: Tushar Pankaj <tushar.s.pankaj@gmail.com>