initial commit, just some wireframe

basically a reminder of what I want to do. The header with i3 constants
can be found in i3/ipc.h

Signed-off-by: Anton Lofgren <alofgren@op5.com>
add Makefile

Signed-off-by: Anton Lofgren <alofgren@op5.com>
Some more wireframe, use a struct for completions

this will probably be a LL soon.

Signed-off-by: Anton Lofgren <alofgren@op5.com>
Add destroy function for completions

Signed-off-by: Anton Lofgren <alofgren@op5.com>