Inbox - Move the Inbox refs from Profile to Account

[gdorsi]

We should move the data from Profile directly to Account.

The problem with profile is that devs should be able to do anything with it without breaking Jazz and having the Inbox there makes things harder to manage.

Should be something like this:

class Inbox extends CoMap {
  inbox = co.optional.json<CoID<InboxRoot>>();
  inboxInvite = co.optional.json<InboxInvite>();
}

export class Account extends CoValueBase implements CoValue {
  static {
    this._schema = {
      profile: {
        ref: () => Profile,
        optional: false,
      } satisfies RefEncoded<Profile>,
      root: {
        ref: () => RegisteredSchemas["CoMap"],
        optional: true,
      } satisfies RefEncoded<CoMap>,
      inbox: {
        ref: () => Inbox,
        optional: false,
      } satisfies RefEncoded<Inbox>,
    };
  }