Adding this and settings scopes (microsoft#4500)

Co-authored-by: Chris Whitten <christopher.whitten@microsoft.com>

Composer/packages/tools/language-servers/intellisense/src/resolvers/variableScopes.ts

@@ -32,5 +32,19 @@ export const variableScopesResolver = (): CompletionItem[] => {
       documentation:
         'turn is associated with a single turn. You can also think of this as the bot handling a single message from the user. Properties in the turn scope are discarded at the end of the turn.',
     },
+    {
+      label: 'this.',
+      kind: CompletionItemKind.Enum,
+      insertText: 'this.',
+      documentation:
+        "this is associated with the active action's properties. It is helpful for input actions that last beyond a single turn of the conversation. Two properties already on the scope are this.value and this.turnCount.",
+    },
+    {
+      label: 'settings.',
+      kind: CompletionItemKind.Enum,
+      insertText: 'settings.',
+      documentation:
+        'settings is associated with any information that is made available to the bot via the platform specific settings configuration system, for example if you are developing your bot using C#, these settings will appear in the appsettings.json file.',
+    },
   ];
 };