* update typeconverter to use state structure
* deinterface the typeutils.TypeConverter -> typeutils.Converter
* finish copying over old type converter code comments
* fix cherry-pick merge issues, fix tests pointing to old typeutils interface type still
* Add/update some DB functions.
* move async workers into subprocessor
* rename FromFederator -> FromFediAPI
* update home timeline check to include check for current status first before moving to parent status
* change streamMap to pointer to mollify linter
* update followtoas func signature
* fix merge
* remove errant debug log
* don't use separate errs.Combine() check to wrap errs
* wrap parts of workers functionality in sub-structs
* populate report using new db funcs
* embed federator (tiny bit tidier)
* flesh out error msg, add continue(!)
* fix other error messages to be more specific
* better, nicer
* give parseURI util function a bit more util
* missing headers
* use pointers for subprocessors
