Add consentManager plugin

Without calling this plugin in BasicExample, the events were not stamped with the consent categories.

Example/BasicExample/BasicExample/BasicExampleApp.swift

@@ -52,7 +52,7 @@ extension Analytics {
             // we were notified (optionally) that consent changed.
             print("Consent Changed")
         }
-
+        analytics.add(plugin: consentManager)
         // Optionally add the IDFAConsent plugin if ATT is to be used.
         // It will capture ATT changes and notify the consent manager.
         // You'll need to copy this code into YOUR codebase and modify it