Merge pull request #14 from Rutherther/packets-span

Rewrite packets string enumerator to use spans, add Injector for .NET 5+

feat: update samples to use UnmanagedCallersOnly entrypoint

chore: update packages to netstandard 2.1

Merge pull request #12 from Rutherther/packets

Implement custom packet serializer

fix: samples to work with NosSmooth packets

chore: fix line endings

feat: add name changer packet interceptor sample