Get arguments with directive

[nicolaslt]

Description

Adds a new helper function proposed in #4626.

I have also removed replaced the custom AST value parsing code with the official helper from graphql-js. It seems to be available all the way to the minimum supported peerDependency version. See this one for version v14.5.6

Related #4626

Type of change

Please delete options that are not relevant.

• 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):

N/A

How Has This Been Tested?

Only relied on the unit tests (old and new)

Test Environment:

• OS: Ubuntu 20.04
• @graphql-tools/...: base of my branch
• NodeJS: 16

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: 96d5e26

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

This PR includes changesets to release 28 packages

Name	Type
@graphql-tools/utils	Minor
@graphql-tools/batch-delegate	Patch
@graphql-tools/batch-execute	Patch
@graphql-tools/delegate	Patch
@graphql-tools/graphql-tag-pluck	Patch
@graphql-tools/import	Patch
@graphql-tools/links	Patch
@graphql-tools/load	Patch
@graphql-tools/merge	Patch
@graphql-tools/mock	Patch
@graphql-tools/node-require	Patch
@graphql-tools/relay-operation-optimizer	Patch
@graphql-tools/resolvers-composition	Patch
@graphql-tools/schema	Patch
@graphql-tools/stitch	Patch
@graphql-tools/stitching-directives	Patch
@graphql-tools/wrap	Patch
@graphql-tools/apollo-engine-loader	Patch
@graphql-tools/code-file-loader	Patch
@graphql-tools/git-loader	Patch
@graphql-tools/github-loader	Patch
@graphql-tools/graphql-file-loader	Patch
@graphql-tools/json-file-loader	Patch
@graphql-tools/module-loader	Patch
@graphql-tools/prisma-loader	Patch
@graphql-tools/url-loader	Patch
graphql-tools	Patch
federation-benchmark	Patch

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[vercel]

@nicolaslt is attempting to deploy a commit to the The Guild Team on Vercel.

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[nicolaslt]

Hmm the test suite seems to be unstable right now. I think I'll wait for a review before trying to get all-green (it seems everything that fails is unrelated to my changes)

[ardatan]

It is ok. We can merge it. Thanks @nicolaslt :)