Some small tweaks extracted from large AP work

[CarsonF]

• Allow running raw EdgeQL query strings without return types There's no reason to make this a type error. It's just the return type that is unknown. REPL uses this signature.
• Change ResourceName<any> to AllResourceNames instead of string No reason to use any string, which we know it's a union of all of our literal strings.

  const resource = ResourcesHost.getByDynamicName('...');
  resource.name === 'User' | 'Project' | ...
  resource.name === 'asdf' // TS error

• Expose resources keyed by DB FQNs Exposing the raw map for usages which would rather check nullability instead of having an error thrown. Also doesn't provide the extra checks that getByEdgeDB.

  ResourcesHost.getByEdgeDB('asdf') // error thrown
  ResourcesHost.byEdgeFQN.get('asdf') // null
  ResourcesHost.getByEdgeDB('User') // User
  ResourcesHost.byEdgeFQN.get('User') // null
  ResourcesHost.byEdgeFQN.get('default::User') // User