kawa: plans for configuration

[DeedleFake]

Currently, what little configuration there is for kawa happens entirely via command line flags. Ideally, a config system would work similarly to how wmii's works in that it exposes a 9P server that gives access to configuration in real time. That filesystem would then be synchronized to an actual config file or two somewhere, probably under $XDG_CONFIG_DIR/kawa, for persistence and editing of the config while the compositor isn't running.

Configuration should allow for several things at a minimum:

• [ ] Theming and coloring of UI elements.
• [ ] Background image configuration.
• [ ] Output layout configuration.