Declarative VS Code Extensions

[chuck-confluent]

Thanks for building this role!

The one thing it doesn't have is declarative vs code extensions. By that, I mean if you run it multiple times while changing the list of extensions, it just keeps adding extensions rather than making the extensions match what the user has declared. It would be great for the list of extensions to truly reflect what extensions are installed.

Thanks again!

[MatthieuBizien]

It would be also useful for speeding up the ansible, when we don't want to update the extensions. On my Mac, it currently takes 28s for 15 extensions.