Revert "feat: use "in" instead of "ref" in packet serializer"

This reverts commit ae1b3301e659c237a10f742675e1f8db9389d2db.

feat: use "in" instead of "ref" in packet serializer

feat: use stackalloc and Span for packet serialization

Merge branch 'main' of github.com:Rutherther/NosSmooth

Merge pull request #52 from Rutherther/feat/optional-wrapper

Add optional wrapper

feat(packets): add optional wrapper for wrapping optional values inside of a list