Features/improved before one file write hook

[jantimon]

Description

Allow to modify content from beforeOneFileWrite for faster and more efficient post modifications.
See entire discussion in #8643.

This PR should not be merged before #8652 and #8661 as this PR builds ontop of a refactoring introduced in those PRs.
Update: #8652 and #8661 have been merged.

Related #8643

Type of change

Please delete options that are not relevant.

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

How Has This Been Tested?

• On my machine
• New unit test

Test Environment:

• OS: MacOS 13

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
• 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: 0311fc0

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

This PR includes changesets to release 3 packages

Name	Type
@graphql-codegen/cli	Minor
@graphql-codegen/plugin-helpers	Minor
@graphql-cli/codegen	Patch

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[saihaj]

wondering if there is something we can do to have tests for this 🤔

[jantimon]

wondering if there is something we can do to have tests for this 🤔

did you see the new test inside packages/graphql-codegen-cli/tests/generate-and-save.spec.ts?

https://github.com/dotansimha/graphql-code-generator/pull/8662/files#diff-497b63d3ef2ecddb792e0df7f03579f02fac5382f94d4b1c9ef0ad2609e89443

[saihaj]

Oops I missed that. Amazing work!