fix infer to be a close match of what's simplified from the json given

[tylersayshi]

will merge this when the current tests are passing

next step will be to refactor the inference and tests so that they match the actual payloads expected that would be valid for atproto schema

something more like this will be more correct

export interface AppBskyFeedPost {
  $type: 'app.bsky.feed.post';
  text: string;
  entities?: Entity[];
  facets?: Facet[];
  reply?: ReplyRef;
  embed?: unknown; // union of embed types
  langs?: string[];
  labels?: unknown; // selfLabels
  createdAt: string;
}

it has the namespace as the $type, that part will be easy

then the main def is the main definition of the type, this is a special and always needed def afaict. I think it's always a record? not sure though.

then the other defs can be referred to like #facet

there will be a good bit of reworking to get that all wired up to infer correctly