perf: store metadata in maps instead of arrays

[NoNameProvided]

Description

From the original PR:

This optimizes the performance of all validations and closes #343.

For example in my company we have 50+ complex models so MetadatStorage.validationMetadatas is array of ~5000 elements, MetadatStorage.constraintMetadatas is an array of 2500 elements. The validator loops over these arrays multiple times, so it takes 5+ seconds to validate a batch of 550 objects.

Checklist

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

Fixes

references #343

[Clashsoft]

See #1048 (review)

[github-actions]

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