goat: lexicon resolution helpers

[bnewbold]

goat lex resolve <nsid>           lookup a schema for an NSID
goat lex parse <path>             parse and validate Lexicon schema files
goat lex publish <path>           add schema JSON files to atproto repo
goat lex ls <nsid>                list all known Lexicon NSIDs at the same level of hierarchy
goat lex validate <uri-or-path>   validate a record, either AT-URI or local file. --catalog allows preloading a directory of lex schema files (recursively)