TF-3189 new option to copy a folder's subaddress

lib/features/mailbox/presentation/model/mailbox_actions.dart

@@ -16,6 +16,7 @@ enum MailboxActions {
   markAsRead,
   selectForRuleAction,
   openInNewTab,
+  copySubaddress,
   disableSpamReport,
   enableSpamReport,
   disableMailbox,
@@ -50,6 +51,8 @@ extension MailboxActionsExtension on MailboxActions {
     switch(this) {
       case MailboxActions.openInNewTab:
         return AppLocalizations.of(context).openInNewTab;
+      case MailboxActions.copySubaddress:
+        return AppLocalizations.of(context).copySubaddress;
       case MailboxActions.newSubfolder:
         return AppLocalizations.of(context).newSubfolder;
       case MailboxActions.disableSpamReport:
@@ -89,6 +92,8 @@ extension MailboxActionsExtension on MailboxActions {
     switch(this) {
       case MailboxActions.openInNewTab:
         return imagePaths.icOpenInNewTab;
+      case MailboxActions.copySubaddress:
+        return imagePaths.icCopy;
       case MailboxActions.newSubfolder:
         return imagePaths.icAddNewFolder;
       case MailboxActions.disableSpamReport:
@@ -181,6 +186,7 @@ extension MailboxActionsExtension on MailboxActions {
   ContextMenuItemState getContextMenuItemState(PresentationMailbox mailbox) {
     switch(this) {
       case MailboxActions.openInNewTab:
+      case MailboxActions.copySubaddress:
       case MailboxActions.newSubfolder:
       case MailboxActions.disableSpamReport:
       case MailboxActions.enableSpamReport:

lib/features/mailbox/presentation/model/mailbox_tree.dart

@@ -121,7 +121,7 @@ class MailboxTree with EquatableMixin {
     return false;
   }
 
-  String? getNodePath(MailboxId mailboxId) {
+  String? getNodePath(MailboxId mailboxId, String pathSeparator) {
     final matchedNode = findNode((node) => node.item.id == mailboxId);
     if (matchedNode == null) {
       return null;
@@ -141,9 +141,9 @@ class MailboxTree with EquatableMixin {
         break;
       }
       if (currentContext != null) {
-        path = '${parentNode.item.getDisplayName(currentContext!)}/$path';
+        path = '${parentNode.item.getDisplayName(currentContext!)}$pathSeparator$path';
       } else {
-        path = '${parentNode.item.name?.name}/$path';
+        path = '${parentNode.item.name?.name}$pathSeparator$path';
       }
       parentId = parentNode.item.parentId;
     }