exposes GraphQLESTreeNode type

Description

We use some custom eslint plugins that build on top of @graphql-eslint/eslint-plugin and it cannot be imported directly from the package if Typescript's config is set to use moduleResolution: NodeNext or any other resolution type. This means explicitly making it public is the easiest way to use it.

Fixes #2399

Type of change

Please delete options that are not relevant.

[X] Bug fix (non-breaking change which fixes an issue)
[ ] New feature (non-breaking change which adds functionality)
[ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
[ ] This change requires a documentation update

Screenshots/Sandbox (if appropriate/relevant):

N/A

How Has This Been Tested?

No, it is just exposing new type.

Test Environment:

N/A

Checklist:

[X] I have followed the CONTRIBUTING doc and the style guidelines of this project
[X] I have performed a self-review of my own code
[ ] I have commented my code, particularly in hard-to-understand areas
[ ] I have made corresponding changes to the documentation
[X] My changes generate no new warnings
[ ] I have added tests that prove my fix is effective or that my feature works
[ ] New and existing unit tests and linter rules pass locally with my changes
[ ] Any dependent changes have been merged and published in downstream modules

Further comments

Unfortunately, I'm not able to make tests pass locally. I get this failure:

@graphql-eslint/eslint-plugin:test:  FAIL  __tests__/examples.spec.ts > Examples > should work in monorepo
@graphql-eslint/eslint-plugin:test: Error:
@graphql-eslint/eslint-plugin:test: Oops! Something went wrong! :(
@graphql-eslint/eslint-plugin:test:
@graphql-eslint/eslint-plugin:test: ESLint: 8.57.0
@graphql-eslint/eslint-plugin:test:
@graphql-eslint/eslint-plugin:test: file:///Users/ondrej.synacek/Projects/graphql-eslint/packages/plugin/dist/esm/types.js:2
@graphql-eslint/eslint-plugin:test: import { GraphQLESTreeNode as GraphQLESTreeNode2 } from "./estree-converter/types.js";
@graphql-eslint/eslint-plugin:test:          ^^^^^^^^^^^^^^^^^
@graphql-eslint/eslint-plugin:test: SyntaxError: The requested module './estree-converter/types.js' does not provide an export named 'GraphQLESTreeNode'
es.js' does not provide an export named 'GraphQLESTreeNode'

Can I ask for assistance on this one? 🙇 Thanks

dimaMachina / graphql-eslint