Where's the repo of @apollographql/graphql-language-service-interface is located

Hello there I looking for some LSP things and while browsing the `apollo-language-server` I found a dependency name -> `@apollographql/graphql-language-service-interface`
https://github.com/apollographql/apollo-tooling/blob/888a710c7c17c0d07e972ebd761807a41473456a/packages/apollo-language-server/package.json#L22

After introspecting the dependency on the npm's website -> https://www.npmjs.com/package/@apollographql/graphql-language-service-interface

Then I clicked on the repository link -> https://github.com/apollographql/graphql-language-service

**Unfortunately the URL return 404...**

### I would like to know the new location if the package code??

Start with packages/apollo-language-server/package.json and inspect the @apollographql/graphql-language-service-interface dependency and its linked npm repository. Confirm the package's current source location or whether the repository link needs correction; done means the location is documented or the broken reference is updated.

Written by the indexing model from the issue text.