feat: add errors for converting packets

feat: add char and string type converters

feat: implement packet serializer

feat: allow nullables in converters

feat: add interfaces for serializers, converters

feat: add base packet types converting

feat: add Packets and PacketTests projects

chore: add file header setting

chore: move build props to correct case

chore: add unix solution without windows-only solutions

chore: add MIT license

chore: fix line endings

Merge branch 'in-packet-serialize' into 'main'

Serialize IN packet

See merge request Rutherther/nos-smooth!3

chore: update NosCore.Packets

fix: serialize in packet correctly

tests: add tests for in packet serializer

feat: register in packet specific serializer to DI

feat: add in packet specific serializer

fix: pass correct arguments to serializer provider

feat: add support for specific serializers

Specific serializers give the ability to add custom behavior for some packets that may be harder to serialize