Discuss software patterns in Key Code Concepts documentation

[DavidRieman]

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It would be great if we could break all of these down into known software pattern descriptions so we can easily describe that as well as educate. https://github.com/WheelMud/WheelMUD/blob/fd6ee4f1f213bfc3785384961f2001c42f46c6c9/Documentation/Development/KeyCodeConcepts.md

A good example to add to this document (or even its own sub-page) would how we use the document DB for flexible storage.

[DavidRieman]

Document: Event Request+Commit model, code structure, Behaviors system, modularity intents, patterns which support non-reboot updates, MEF usage, etc.