Add config.graphql.apolloConfig

[timleslie]

This PR adds a config option which allows the user to specify additional config to be applied to their ApolloServer. This is required for customising things like query limiting and the GraphQL playground, among other things.

See the ApolloServer constructor docs here: https://www.apollographql.com/docs/apollo-server/api/apollo-server/#constructor

This PR is a blocker for #4894.

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🦋 Changeset detected

Latest commit: f23d3e4

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 11 packages

Name	Type
@keystone-next/website	Minor
@keystone-next/keystone	Minor
@keystone-next/types	Minor
@keystone-next/test-utils-legacy	Patch
@keystone-next/auth	Major
@keystone-next/example-auth	Patch
@keystone-next/app-basic	Patch
@keystone-next/example-ecommerce	Patch
keystone-next-app	Patch
@keystone-next/example-roles	Patch
@keystone-next/example-todo	Patch

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[JedWatson]

When it comes to adding/modifying config I'd really like to have a process where we document the longer-term view of what all the things are we're planning to solve with config, and then review PRs like this with that in mind.

I find it hard to see where this is going, and what else it may interact with down the future, which makes breaking changes more likely in my mind.

We had this early on with the types, and it was really helpful, but we've cleaned them up now to match what's actually been implemented. Which is good, but we've lost that future clarity, and imo should figure out how to get it back.

[emmatown]

Suggested change

	apolloConfig: config.graphql?.apolloConfig,
	apolloConfig: initializedKeystoneConfig.graphql?.apolloConfig,