Use pkgroll, bump Node, remove deprecations, improve, shorter paths, and friends

[enisdenjo]

Closes #567, closes #564, closes #553, closes #591

• Drop ws v7 support
• Drop deprecated fastify-websocket support
• Least supported Node version is current LTS (v20)
• Least supported graphql versions are v15.10.1 and v16.10.0
• Default package type is module (commonjs is still supported but through exports)
• Drop eslint
• The /lib/ part from imports is removed. graphql-ws/lib/use/ws becomes graphql-ws/use/ws
• Remove isFatalConnectionProblem
• Remove isMessage
• Errors thrown from subscription iterables will be caught and reported through the ErrorMessage
• ErrorMessage uses and onError returns GraphQLFormattedError (instead of GraphQLError)
• Client is truly zero-dependency, not even graphql is needed
  • New export of just client when importing graphql-ws/client
• onSubscribe, onOperation, onError, onNext and onComplete hooks don't have the full accompanying message anymore, only the ID and the relevant part from the message

TODO

• Update documentation for v6 release #616

[theguild-bot]

🚀 Snapshot Release (alpha)

The latest changes of this PR are available as alpha on npm (based on the declared changesets):

Package	Version	Info
graphql-ws	6.0.0-alpha-762205fc85dcd4025c050b9794d4b77a7ecea1c9	npm ↗︎ unpkg ↗︎

[github-actions]

💻 Website Preview

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