fix(packets): add missing usings

chore: move PacketSerializer types to correct namespace

feat: split packets definitions into separate assembly

refactor: split string converters

Merge pull request #16 from Rutherther/packets-list-inline-serializer

Add generation of packet list inline serializer

feat: use StringBuilder Append overloads

Merge pull request #12 from Rutherther/packets

Implement custom packet serializer

fix: allow to convert all enums using System.Convert class

feat: add base packet types converting