TBDelta: Move `GlowFork` namespace

[TheBadkraft]

general housekeeping

Clean up name space and move GlowFork objects: TBDelta -> TBChi.

[TheBadkraft]

Completed

Changed assignment of exportedTypes as follows:

    private static readonly Type[] exportedTypes = Assembly
        .GetEntryAssembly()     // from .GetExecutingAssembly
        .GetExportedTypes()
        .Where(t => !t.IsAbstract)
        .Where(t => typeof(State).IsAssignableFrom(t))
        .ToArray();