feat(plugin/add): export config type

[taro-28]

Description

Export config type for @graphql-codegen/add.

Related #9986

Type of change

Please delete options that are not relevant.

• New feature (non-breaking change which adds functionality)

Screenshots/Sandbox (if appropriate/relevant):

How Has This Been Tested?

I tested it by importing from another workspace.

Test Environment:

• OS: macOS
• @graphql-codegen/...: latest
• NodeJS: v20.12.2

Checklist:

• I have followed the CONTRIBUTING doc and the style guidelines of this project
• 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
• 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 pass locally with my changes
• Any dependent changes have been merged and published in downstream modules

[changeset-bot]

🦋 Changeset detected

Latest commit: 796516b

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@graphql-codegen/add	Patch

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