compositor: deprecate cms-static and cms-colord plugins

While developing the new color management, keeping these old plugins working would require extra work. Let's deprecate these to see if anyone cares about them, pending removal after the Weston 11.0.0 release.

CI will keep building these in the "Full build" configuration only. Doc and no-GL builds are no different for these plugins, so there these are no longer built.

See #634