fix!: improve exports and abstract class

[ethanve]

Mostly just to bump to v1

[ethanve]

@taion any idea?

/home/travis/build/4Catalyzer/graphql-subscription-server/test/AsyncQueue.test.ts
  1:1  error  Definition for rule 'import/no-extraneous-dependencies' was not found  import/no-extraneous-dependencies
/home/travis/build/4Catalyzer/graphql-subscription-server/test/RedisSubscriber.test.ts
  1:1  error  Definition for rule 'import/no-extraneous-dependencies' was not found  import/no-extraneous-dependencies
/home/travis/build/4Catalyzer/graphql-subscription-server/test/__mocks__/redis.ts
  1:1  error  Definition for rule 'import/no-extraneous-dependencies' was not found  import/no-extraneous-dependencies

[ethanve]

the package.json does have eslint-plugin-import as a dep

[taion]

it's because the config is missing the import plugin. why? because...

4catalyzer-typescript works differently from 4catalyzer-flow – it's an add-on to an existing config, like w/ https://github.com/4Catalyzer/graphql-node-resource/blob/1566ebc6cd842bc9617c2fc4b3fde2ab1ad9a294/.eslintrc#L4

so add back eslint-config-4catalyzer

[jquense]

🎉 This PR is included in version 1.0.0 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

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