Adds fragments representing descriptions of some of the more complex fields in the top-level metadata.
Adds spec fragments describing for Environment and Runtime parameters
Adds placeholder for Model Training fragment.
I'm thinking it would be best to flesh this out in a PR once the repo is public so we can get feedback that way.
Builds off of changes in #3, so should be merged after that PR.
Adds fragments representing descriptions of some of the more complex fields in the top-level metadata.
Builds off of changes in #3, so should be merged after that PR.