chore: Follow up: Add missing command hints

lib/l10n/intl_en.arb

@@ -3236,5 +3236,7 @@
     "enterNewChat": "Enter new chat",
     "approve": "Approve",
     "youHaveKnocked": "You have knocked",
-    "pleaseWaitUntilInvited": "Please wait now, until someone from the room invites you."
+    "pleaseWaitUntilInvited": "Please wait now, until someone from the room invites you.",
+    "commandHint_logout": "Logout your current device",
+    "commandHint_logoutall": "Logout all active devices"
 }

lib/pages/chat/command_hints.dart

@@ -80,6 +80,10 @@ String commandHint(L10n l10n, String command) {
       return l10n.commandHint_unignore;
     case 'roomupgrade':
       return l10n.commandHint_roomupgrade;
+    case 'logout':
+      return l10n.commandHint_logout;
+    case 'logoutall':
+      return l10n.commandHint_logoutall;
     default:
       return "";
   }