refactor: split string converters

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

Add generation of packet list inline serializer

feat: add inline list converter

feat: accept types and variable names in inline converter generators instead of packet parameters

feat: use StringBuilder Append overloads

feat: split inline generated deserialization into different methods

Merge pull request #12 from Rutherther/packets

Implement custom packet serializer

fix: handle null string inline serializer correctly

chore: rename type generators to inline converter generators