Main

Add remove command and helper scripts.

It works! Need to add some polish before we're ready to call it 0.1, but
nearly there!

Greatly improved the queue.

Adding very basic command server and module packaging.

Adding command server prototype. Clean shutdown does not work properly, need to figure that out.

Creating hbkcd (Handbrake Control Daemon) that will supplant hbkif at
least for now.