Reuse enums

[arlocomotive]

Summary

reuses previously created enums instead of pushing a new one every time. makes all enum values identical internally, which notably allows them to be used as keys in tables. might also reduce memory usage a tiny bit idk

Related issue or discussion

Fixes #1162

Type of change

• Bug fix
• New feature
• Refactor
• Tests
• Build/export/tooling
• Other

Area affected

• Client
• Creator
• Server
• Networking / replication
• Scripting API
• Scripting runtimes
• Datamodel
• UI / UX
• Build / export
• Other

Checklist

• I have read the contributing guidelines
• Added in-code documentation (where needed)
• Ran dotnet restore
• Ran dotnet format
• Ran dotnet build
• Ran dotnet test --project Polytoria.Tests/Polytoria.Tests.csproj
• Tested the changes in a local environment
• Ensured all commits are signed off

AI/LLM use

None

[hiRemy]

this pr adds a cross vm bug inside PushEnum </3

to reproduce, open two different world files in the creator and run the same script that touches enums, first world will work fine, the second one on the other hand will fail

[arlocomotive]

this pr adds a cross vm bug inside PushEnum </3

to reproduce, open two different world files in the creator and run the same script that touches enums, first world will work fine, the second one on the other hand will fail

thought this might happen but didn't test enough 💔 turned the cache into a lua table in the registry, should work now