Remove knex and mongoose from public APIs

[timleslie]

As per our roadmap we're moving towards Prisma being the core of our backend database support.

This PR removes knex and mongoose as supported adapters from the public API. It also removes the mongoId field type, which was used exclusively by the mongoose adapter.

By focusing on a single backend database adapter we will be able to provide a more consistent experience for all users while still supporting a range of backends, including MongoDB, which is currently being worked on.

It will also significantly reduce the complexity of our backend code, allowing us to add support for new field types and features much more easily than is currently possible.

Notes for reviewer: This PR is the minimal set of changes required to remove the knex, mongoose, and mongoId values from the public API. Once these are gone there will be a series of follow up PRs to clean up the code which is now inaccessible.

[changeset-bot]

🦋 Changeset detected

Latest commit: cdd53df

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

This PR includes changesets to release 20 packages

Name	Type
@keystone-next/fields	Major
@keystone-next/keystone	Major
@keystone-next/types	Major
@keystone-next/test-utils-legacy	Major
@keystone-next/fields-legacy	Patch
@keystone-next/benchmarks-legacy	Patch
@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-sandbox	Patch
@keystone-next/example-todo	Patch
@keystone-next/auth	Major
@keystone-next/fields-document	Patch
@keystone-next/admin-ui	Patch
@keystone-next/server-side-graphql-client-legacy	Patch
@keystone-next/api-tests-legacy	Patch
@keystone-next/admin-ui-utils	Patch
@keystone-next/cloudinary	Patch

Not sure what this means? Click here to learn what changesets are.

Click here if you're a maintainer who wants to add another changeset to this PR

[vercel]

This pull request is being automatically deployed with Vercel (learn more).
To see the status of your deployment, click below or on the icon next to each commit.

🔍 Inspect: https://vercel.com/keystonejs/keystone-next-docs/7FYXes8JNetwxYsMwavyEL9e8KDp
✅ Preview: https://keystone-next-docs-git-remove-knex-mongoose-public-keystonejs.vercel.app

[codesandbox-ci]

This pull request is automatically built and testable in CodeSandbox.

To see build info of the built libraries, click here or the icon next to each commit SHA.

Latest deployment of this branch, based on commit cdd53df:

Sandbox	Source
@keystone-next/example-sandbox	Configuration

[gautamsi]

Can you release this after #5184

I can use that release with mongo until prisma supports it.

[timleslie]

@gautamsi Yep, we're going to ship a release today before this goes through 👍