Add Tracks event for package tracking button

Author: ctarda

WooCommerce/Classes/Analytics/WooAnalyticsStat.swift

@@ -138,6 +138,7 @@ public enum WooAnalyticsStat: String {
     case orderDetailCustomerPhoneOptionTapped   = "order_detail_customer_info_phone_menu_phone_tapped"
     case orderDetailCustomerSMSOptionTapped     = "order_detail_customer_info_phone_menu_sms_tapped"
     case orderDetailProductDetailTapped         = "order_detail_product_detail_button_tapped"
+    case orderDetailTrackPackageButtonTapped = "order_detail_track_package_button_tapped"
     case orderFulfillmentCompleteButtonTapped   = "order_fulfillment_mark_order_complete_button_tapped"
     case orderMarkedCompleteUndoButtonTapped    = "snack_order_marked_complete_undo_button_tapped"
     case orderShareStoreButtonTapped            = "orders_list_share_your_store_button_tapped"

WooCommerce/Classes/ViewRelated/Orders/OrderDetailsViewController.swift

@@ -600,6 +600,7 @@ private extension OrderDetailsViewController {
             return
         }
 
+        WooAnalytics.shared.track(.orderDetailTrackPackageButtonTapped)
         displayWebView(url: url)
     }