Warn on any command if not on latest version

Commencez par la vérification de version existante utilisée par src version et par la requête vers /.api/src-cli/version. Suivez la manière dont les commandes sont distribuées afin que la vérification puisse s’exécuter avant toute commande. Le travail est terminé lorsqu’une version obsolète produit un avertissement clair lors de chaque commande, tandis que les versions à jour n’en produisent pas.

Many users encounter bugs from outdated versions of src-cli and raise them to support before realizing they were already fixed and just needed to update. Recently, a user hit a nasty bug when they were unintentionally running a version 16 months out of date! We should try to warn users if the version of src-cli they are running is not at or above the version recommended by their Sourcegraph instance (/.api/src-cli/version). We already perform this check when running src version:

> src version
Current version: 4.3.0
Recommended version: 4.4.0 or later

We should perform this check before running any command and highlight a warning in the output if it's out-of-date.