feat: let graphql-tag-pluck load from astro files

[XiNiHa]

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Description

Adds .astro file support on graphql-tag-pluck.

Related #5780

Type of change

Please delete options that are not relevant.

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

How Has This Been Tested?

Added unit tests.

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 and linter rules pass locally with my changes
• Any dependent changes have been merged and published in downstream modules

[changeset-bot]

🦋 Changeset detected

Latest commit: 939a506

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

This PR includes changesets to release 3 packages

Name	Type
@graphql-tools/code-file-loader	Minor
@graphql-tools/graphql-tag-pluck	Minor
@graphql-tools/git-loader	Patch

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[XiNiHa]

There is a bug in @astrojs/compiler that the synchronous version also returns a Promise 🤦
withastro/compiler#911

[XiNiHa]

I've workedaround the issue by using astrojs-compiler-sync.