Support more ways of specifying the installation version

Currently, the way script handles versioning is simply by passing the version over to pip as poetry=={version}. This is fine, however it would be nice if we could set the version to something like ^1.3.0, or similar.

This probably shouldn't be too hard to handle, as there's already a regex checking for semver compatibility, and these are just some set of additional characters that could optionally be there. If this specifier isn't there, the script can just use the current approach of ==.

Lisez l'expression régulière existante de validation de semver du script d'installation ainsi que le code qui transmet la version à pip. Vérifiez comment l'argument actuel poetry=={version} est construit, puis vérifiez que les spécificateurs pris en charge tels que ^1.3.0 conservent leur forme prévue, tandis que les versions simples conservent le comportement actuel. La tâche est terminée lorsque les formes de version acceptées sont couvertes par des tests.