Graphql codegen typescript effect

[vecerek]

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Description

Implements a new GraphQL codegen plugin that outputs a client SDK written using Effect.

Related # (issue)

#664

Type of change

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• 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):

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How Has This Been Tested?

Please describe the tests that you ran to verify your changes. Provide instructions so we can
reproduce. Please also list any relevant details for your test configuration

• Test A
• Test B

Test Environment:

• OS: MacOS 14.2.1 (23C71)
• @graphql-codegen/...:
• NodeJS: v20.11.0

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

Further comments

I've mostly followed the implementation of @graphql-codegen/typescript-graphql-request

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[vecerek]

I accidentally closed this PR while trying to sync my fork 🤦
Re-opened as #701