feat(utils): expose ast-utils' helpers

[MichaelDeBoey]

Currently we're using a copy of isNodeOfType in eslint-plugin-testing-library.
https://github.com/testing-library/eslint-plugin-testing-library/blob/main/lib/node-utils/is-node-of-type.ts#L6-L11

As the extraction in this codebase was originally copied from eslint-plugin-testing-library (see #3677 & testing-library/eslint-plugin-testing-library#329), it seems logical to expose it here so other packages can use it whenever they want.

[typescript-eslint]

Thanks for the PR, @MichaelDeBoey!

typescript-eslint is a 100% community driven project, and we are incredibly grateful that you are contributing to that community.

The core maintainers work on this in their personal time, so please understand that it may not be possible for them to review your work immediately.

Thanks again!

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✅ Successfully ran 48 targets

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[codecov]

Codecov Report

Merging #4503 (59271d1) into main (0c63f26) will decrease coverage by 2.09%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main    #4503      +/-   ##
==========================================
- Coverage   94.26%   92.17%   -2.10%     
==========================================
  Files         169      204      +35     
  Lines        9511     8860     -651     
  Branches     2973     2752     -221     
==========================================
- Hits         8966     8167     -799     
- Misses        322      484     +162     
+ Partials      223      209      -14     

Flag	Coverage Δ
unittest	92.17% <100.00%> (-2.10%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
packages/utils/src/ast-utils/index.ts	100.00% <100.00%> (ø)
packages/typescript-estree/src/node-utils.ts
packages/typescript-estree/src/convert.ts
...estree/src/create-program/createIsolatedProgram.ts
...pt-estree/src/create-program/createWatchProgram.ts
packages/typescript-estree/src/ts-estree/index.ts
...escript-estree/src/semantic-or-syntactic-errors.ts
...ges/typescript-estree/src/create-program/shared.ts
...pt-estree/src/ts-estree/estree-to-ts-node-types.ts
packages/typescript-estree/src/simple-traverse.ts
... and 60 more

[JoshuaKGoldberg]

Yup, this is a good change. Thanks @MichaelDeBoey!

[JoshuaKGoldberg]

@bradzacher could I ask for your help merging please? 😄

[bradzacher]

yeah automerge won't work unless all the required signals are green.
The codecov signal is red because somehow this caused a 2% drop in coverage...? Wut.

So we just need to admin bypass instead of auto-merging