Add Makefile

Signed-off-by: Oleg Bulatov <oleg@bulatov.me>
Move files into ShellParser/

Signed-off-by: Oleg Bulatov <oleg@bulatov.me>
Add AndOrList

Signed-off-by: Oleg Bulatov <oleg@bulatov.me>
Add print method

Signed-off-by: Oleg Bulatov <oleg@bulatov.me>