Support importing generated code from `@timkendall/tql`

[timkendall]

Follow the @prisma/client approach as it is a nice DX.

We could expose this as a codegen option w/this being the default (to generate to a non-default location we could take a --output flag).

(Possible) Default Workflow

1. yarn install @timkendall/tql
2. Post-install hook looks for a .graphqlconfig or apollo.config.js to discover schema and runs codegen
3. Generated code is stored in node_modules/@timkendall/tql/.tql/client
4. User imports their generated code from the module i.e import { query, } from '@timkendall/tql'

(Possible) Custom Workflow (for users who are using tql to generate published SDKs or need more control)

1. yarn install @timkendall/tql
2. Manually execute codegen yarn tql <schema> > sdk.ts OR yarn tql <schema> --sdk (interactive prompt?)

[ivasilov]

Please note that this is incompatible with Yarn 2+. There's a discussion at https://github.com/prisma/prisma/issues/1439.

[timkendall]

Ah I did not know that, thanks for the heads up. Yeah may not be the best idea to do something non-standard like that (though the developer experience is fairly nice).