GraphQLDataSourceRequestKind should be exported

To check if GraphQLDataSourceProcessOptions is of kind INCOMING_OPERATION or of type HEALTH_CHECK or LOADING_SCHEMA the enum GraphQLDataSourceProcessOptions should be exported for other modules. Please add the export to `datasource\index.ts`

Open `datasource/index.ts` and locate the GraphQLDataSourceProcessOptions enum. Export it so other modules can inspect whether a request is an incoming operation, health check, or schema loading request; done means the enum is publicly available from that module.

Written by the indexing model from the issue text.