feat(eslint-plugin-internal): [prefer-ast-types-enum] add DefinitionType enum

[rafaelss95]

As per discussion on #3868 (comment)

[typescript-eslint]

Thanks for the PR, @rafaelss95!

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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[nx-cloud]

Nx Cloud Report

CI ran the following commands for commit ccd20cd. Click to see the status, the terminal output, and the build insights.

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Status	Command
	nx test @typescript-eslint/eslint-plugin-tslint
	nx test @typescript-eslint/eslint-plugin
	nx test @typescript-eslint/eslint-plugin-internal
	nx test @typescript-eslint/eslint-plugin-tslint
	nx test @typescript-eslint/eslint-plugin-tslint
	nx test @typescript-eslint/eslint-plugin
	nx test @typescript-eslint/eslint-plugin
	nx run-many --target=typecheck --all --parallel
	nx run-many --target=build --all --parallel
	nx run-many --target=build --all --parallel
	nx test @typescript-eslint/parser
	nx test @typescript-eslint/parser
	nx run-many --target=build --all --parallel
	nx test @typescript-eslint/experimental-utils
	nx test @typescript-eslint/experimental-utils
	nx test @typescript-eslint/scope-manager
	nx test @typescript-eslint/scope-manager
	nx test @typescript-eslint/visitor-keys
	nx test @typescript-eslint/visitor-keys
	nx test @typescript-eslint/parser

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[codecov]

Codecov Report

Merging #3916 (ccd20cd) into master (8aa87a1) will increase coverage by 0.00%.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master    #3916   +/-   ##
=======================================
  Coverage   93.51%   93.51%           
=======================================
  Files         151      151           
  Lines        8141     8146    +5     
  Branches     2583     2583           
=======================================
+ Hits         7613     7618    +5     
  Misses        167      167           
  Partials      361      361           

Flag	Coverage Δ
unittest	93.51% <100.00%> (+<0.01%)	⬆️

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

Impacted Files	Coverage Δ
...ges/eslint-plugin/src/rules/no-inferrable-types.ts	93.33% <ø> (ø)
...nt-plugin/src/rules/no-unused-vars-experimental.ts	91.39% <ø> (ø)
...plugin/src/rules/explicit-module-boundary-types.ts	89.47% <100.00%> (ø)
packages/eslint-plugin/src/rules/no-shadow.ts	77.34% <100.00%> (+0.73%)	⬆️
packages/eslint-plugin/src/rules/no-type-alias.ts	100.00% <100.00%> (ø)
...es/eslint-plugin/src/rules/no-use-before-define.ts	91.20% <100.00%> (+0.09%)	⬆️

[bradzacher]

LGTM - thanks for making this codebase cleaner!!