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/toc.yml

@@ -21,8 +21,14 @@
       topicUid: Guides.Concepts.Events
     - name: Managing Connections
       topicUid: Guides.Concepts.ManageConnections
-    - name: Entities
-      topicUid: Guides.Concepts.Entities
+- name: Entities
+  items:
+    - name: Introduction
+      topicUid: Guides.Entities.Intro
+    - name: Casting
+      topicUid: Guides.Entities.Casting
+    - name: Glossary & Flowcharts
+      topicUid: Guides.Entities.Glossary
 - name: Working with Text-based Commands
   items:
     - name: Introduction