Add support for @container queries by updating the CSS language service

[marvinroger]

Closes #14

This PR updates the CSS language service in order to support @container queries.

C.f. microsoft/vscode-css-languageservice#365 and microsoft/vscode-css-languageservice#371

The PR is ready to be published to npm 😉

I'll make a followup PR to https://github.com/styled-components/vscode-styled-components once published

[jasonwilliams]

Seems good thanks for the contribution, the package lock has a different version to the package.json.
I will test later

[marvinroger]

Thanks @jasonwilliams, just fixed the lockfile

[jasonwilliams]

oh dear, so many tests fail.
Not your fault, they fail even on master, I guess so many things have moved around since this was last built

[jasonwilliams]

Ok, no biggie, the e2e typescript version is just outdated compared to the main plugin typescript version.
Ill merge this and update them both, then figures crossed tests pass again

[phuctm97]

For some reasons container query still doesn't work 🥹

[kitajchuk]

Also still not working for me as well.