Rename `.keystone/types` to `.keystone` and add `graphql` export to `.keystone`

[emmatown]

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This adds a graphql export to .keystone (renamed from .keystone/types because with the graphql export, it is no longer just types) that is the same as the graphql export from @keystone-6/core but uses the specific generated context type for the project. This is important for #7575 since not using the specific context will be more painful but it also generally improves the experience of using graphql-ts for schema extensions and virtual fields.

[changeset-bot[bot]]

🦋 Changeset detected

Latest commit: 112a8f87dbe4256a871e3c8a856e6e063289a629

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

This PR includes changesets to release 16 packages

Name	Type
@keystone-6/core	Minor
@keystone-6/auth	Major
@keystone-6/cloudinary	Major
@keystone-6/fields-document	Major
@keystone-6/session-store-redis	Major
@keystone-6/example-auth	Patch
@keystone-6/examples-app-basic	Patch
@keystone-6/example-with-custom-session-validation	Patch
@keystone-6/example-ecommerce	Patch
@keystone-6/example-graphql-api-endpoint	Patch
@keystone-6/example-roles	Patch
@keystone-6/example-testing	Patch
@keystone-6/example-with-auth	Patch
@keystone-6/sandbox	Patch
@keystone-6/website	Patch
@keystone-6/example-document-field	Patch

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Name	Status	Preview	Updated
keystone-next-docs	✅ Ready (Inspect)	Visit Preview	Aug 10, 2022 at 2:23AM (UTC)

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Latest deployment of this branch, based on commit 112a8f87dbe4256a871e3c8a856e6e063289a629:

Sandbox	Source
@keystone-6/sandbox	Configuration

[dcousens]

I don't think we want to do this at this time.

That may change in the future, but for now I will close this pull request.