* Segment lexicons into more specific namespaces and tighten up some naming conventions
* Update API to use new lexicons
* Update pds and dev-env to use new lexicons
* Update lexicons of xprc procedures to avoid using query params when possible
* Update code generated by lex-cli to reduce param counts
* Update all API usages to new signatures
* Fix readme
* Remove params from postNotifiactionsSeen lexicon schema
* schemas
* database & buffing up schemas
* declaration on createAccount, + fixing up test client
* fix up dev-env
* schema comments
* nsid for declaration actorType
* declaration description
* oops token schema slipped in
* declaration -> declarationCid
* missed a couple of db things
* user-did table
* yay fixed it
* resolve available domains from db
* serverDid + tests
* check for invalid domains
* username validation
* woopsied on merge
* fix migration
* lower indexes
* even moar validation
* user-did table
* yay fixed it
* resolve available domains from db
* serverDid + tests
* check for invalid domains
* mv available domain check to constructor
* oops reverse check
