feat: add embeddedMessagingEnabled property to IterableConfig

Author: lposen

src/core/classes/IterableConfig.ts

@@ -319,6 +319,11 @@ export class IterableConfig {
    */
   encryptionEnforced = false;
 
+  /**
+   * This specifies whether the SDK should enable and use embedded messaging.
+   */
+  embeddedMessagingEnabled = false;
+
   /**
    * Converts the IterableConfig instance to a dictionary object.
    *