fix(experimental-utils): export RuleCreator interfaces

[JoshuaKGoldberg]

PR Checklist

• Addresses an existing issue: fixes Cannot generate declaration file when using ESLintUtils.RuleCreator #4198
• That issue was marked as accepting prs
• Steps in CONTRIBUTING.md were taken

Overview

Also exports the types used by RuleCreator.

[typescript-eslint]

Thanks for the PR, @JoshuaKGoldberg!

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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.

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Nx Cloud Report

CI ran the following commands for commit bd63054. Click to see the status, the terminal output, and the build insights.

📂 See all runs for this branch

Status	Command
	Node 16.x - nx test @typescript-eslint/eslint-plugin-tslint
	Node 16.x - nx test @typescript-eslint/eslint-plugin
	Node 12.x - nx test @typescript-eslint/eslint-plugin-tslint
	Node 12.x - nx test @typescript-eslint/eslint-plugin
	Node 12.x - nx test @typescript-eslint/eslint-plugin-internal
	Node 12.x - nx test @typescript-eslint/eslint-plugin-tslint
	Node 12.x - nx test @typescript-eslint/eslint-plugin
	Node 14.x - nx test @typescript-eslint/eslint-plugin-tslint
	Node 14.x - nx test @typescript-eslint/eslint-plugin
	Node 12.x - nx run-many --target=typecheck --all --parallel
	Node 16.x - nx test @typescript-eslint/parser
	Node 16.x - nx test @typescript-eslint/experimental-utils
	Node 16.x - nx test @typescript-eslint/scope-manager
	Node 16.x - nx test @typescript-eslint/visitor-keys
	Node 12.x - nx run-many --target=build --all --parallel --exclude website --exclude website
	Node 16.x - nx test @typescript-eslint/typescript-estree
	Node 16.x - nx run-many --target=build --all --parallel --exclude website --exclude website
	Node 12.x - nx run-many --target=build --all --parallel --exclude website --exclude website
	Node 12.x - nx test @typescript-eslint/parser
	Node 14.x - nx test @typescript-eslint/parser

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[codecov]

Codecov Report

Merging #4199 (bd63054) into main (2e2ff5d) will decrease coverage by 0.05%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main    #4199      +/-   ##
==========================================
- Coverage   92.76%   92.70%   -0.06%     
==========================================
  Files         332      194     -138     
  Lines       11524     8678    -2846     
  Branches     3285     2691     -594     
==========================================
- Hits        10690     8045    -2645     
+ Misses        361      254     -107     
+ Partials      473      379      -94     

Flag	Coverage Δ
unittest	92.70% <100.00%> (-0.06%)	⬇️

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

Impacted Files	Coverage Δ
...experimental-utils/src/eslint-utils/RuleCreator.ts	80.00% <100.00%> (ø)
...ges/typescript-estree/src/create-program/shared.ts
...ges/scope-manager/src/lib/es2018.asyncgenerator.ts
packages/scope-manager/src/lib/es2015.generator.ts
packages/scope-manager/src/lib/es2015.ts
packages/scope-manager/src/lib/es2018.full.ts
...kages/scope-manager/src/lib/es2017.sharedmemory.ts
packages/scope-manager/src/lib/es2020.bigint.ts
packages/scope-manager/src/lib/es2019.array.ts
packages/scope-manager/src/lib/es2019.object.ts
... and 129 more