feat: issue #1218 (#1218)

https://github.com/Termix-SSH/Support/issues/1218

src/ui/locales/en.json

@@ -4567,6 +4567,8 @@
         "reopenTabsOnLoginDesc": "Restore your open tabs when you log in or refresh the page, even from another device",
         "confirmTabClose": "Confirm Tab Close",
         "confirmTabCloseDesc": "Ask before closing terminal tabs",
+        "showTabNumbers": "Show Tab Numbers",
+        "showTabNumbersDesc": "Display a number on each tab to help tell them apart",
         "transferConcurrency": "Simultaneous File Transfers",
         "transferConcurrencyDesc": "How many files the side by side local/remote manager uploads or downloads at the same time. Lower this if your server limits SFTP channels.",
         "settingsAppRail": "App Rail",