Add GraphQL support to ts-loader

[kenotron]

• https://www.npmjs.com/package/ts-transform-graphql-tag - Add this transformer to allow TS files to have access to the gql tag.
• Also, add a typing definition of the following form:

declare module '*.graphql' {
  import { DocumentNode } from 'graphql';
  const value: DocumentNode;
  export default value;
}

Limitation of that typing definition is that only ONE default query can be in a single file

[github-actions]

Issues seem to have gone stale.