feat: display valid enum values for "isEnum" errors

[hood]

Description

Checklist

• [x] the pull request title describes what this PR does (not a vague title like Update index.md)
• [x] the pull request targets the default branch of the repository (develop)
• [x] the code follows the established code style of the repository
  • npm run prettier:check passes
  • npm run lint:check passes
• [x] tests are added for the changes I made (if any source code was modified)
• [ ] documentation added or updated
• [x] I have run the project locally and verified that there are no errors

Fixes

fixes #17198 (actually "implements" it, since it's a feature request and not a bug report)

[hood]

Is this ever gonna be merged?

[hood]

Is this ever going to be merged?

[ozburo]

Yes, please merge so we don't have to create custom error messages just to show possible enum values xD

[NoNameProvided]

Superset by https://github.com/typestack/class-validator/pull/1826.

[github-actions[bot]]

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