Adding Entity guides, flowcharts, better sample system. (#2054)

* initial

* Interaction glossary entry

* Sharded Interaction sample

* Renames into solution

* Debugging samples

* Modify target location for webhookclient

* Finalizing docs work, resolving docfx errors.

* Adding threaduser to user chart

* Add branch info to readme.

* Edits to user chart

* Resolve format for glossary entries

* Patch sln target

* Issue with file naming fixed

* Patch 1/x for builds

* Appending suggestions

docs/guides/concepts/samples/entities.cs

@@ -1,11 +0,0 @@
-public string GetChannelTopic(ulong id)
-{
-	var channel = client.GetChannel(81384956881809408) as SocketTextChannel;
-	return channel?.Topic;
-}
-
-public SocketGuildUser GetGuildOwner(SocketChannel channel)
-{
-	var guild = (channel as SocketGuildChannel)?.Guild;
-	return guild?.Owner;
-}