YAML schema TODOs

[JustinPrivitera]

• Make
  

  conduit/src/libs/conduit/conduit_node.cpp

  Line 13338 in 92e22b3

  Node::to_yaml_stream(std::ostream &os,

  
  look like
  

  conduit/src/libs/conduit/conduit_node.cpp

  Line 13178 in 92e22b3

  Node::to_json_stream(std::ostream &os,

  
  (Add conduit_yaml, conduit_yaml_external, conduit_base64_yaml)

• Get the final test in t_conduit_generator.cpp to work.

• do the conduit_base64_yaml case

• for conduit_bin based i/o, those paths look for a related .conduit_json file to get schema info.
  Now that we have new fancy yaml schemas, we should also look for related .conduit_yaml file and also wire up their creation. Node::load and Node::save conduit_bin case.

• schema should be able to save to yaml as well