Add factory for creating the fake data of Operation/Fragment

[velineurce]

Hello.

First of all thanks for the plugin! It has many great features.

My question is related to operation/fragment mocks. Did you consider such a feature to support creating mocks for operation/fragments next to the file that contains the type? For example:

src/
├── libs
│   └── feature-one/
│       ├── get-feature-one-data.ts
│       └── get-feature-one-data.mock.ts // <- generated by 'fabbrica'
│   └── feature-two/
│       ├── get-feature-two-data.ts
│       └── get-feature-two-data.mock.ts // <- generated by 'fabbrica'

The plugin would generate get-feature-one-data.mock.ts file next to the operation/fragment. Such a feature is in this plugin https://stackblitz.com/github/zhouzi/graphql-codegen-factories/tree/main/examples/usage-with-near-operation-file-preset but it's not maintained anymore.