Add A/A test

src/Navigation.tsx

@@ -1008,6 +1008,9 @@ function RoutesContainer({children}: React.PropsWithChildren<{}>) {
         })
       }
     }
+
+    // temp, just testing
+    void ax.features.enabled(ax.features.AATest)
   })
 
   return (

src/analytics/features/types.ts

@@ -9,4 +9,6 @@ export enum Features {
   ImportContactsOnboardingDisable = 'import_contacts:onboarding:disable',
   ImportContactsSettingsDisable = 'import_contacts:settings:disable',
   LiveNowBetaDisable = 'live_now_beta:disable',
+
+  AATest = 'aa-test',
 }