Consider changing GitHub repo name or package.json "name"

[glasser]

Currently, the repo name is vscode-graphql and the package.json name is "vscode-apollo". It is currently published to npm as vscode-apollo though I'm not sure why it's published there at all. The extension ID is apollographql.vscode-apollo and tht tiel is Apollo GraphQL. vscode-graphql does not exist in npm but there is another repository by that name which is a separate project: https://github.com/graphql/vscode-graphql

It would be a bit less confusing if these aligned a bit more; I think changing the GitHub repo name to vscode-apollo would be the simplest change.

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