Write a parser to add hydra_models automatically

The parser would get a python module, class or function as input and then creates the structured config accordingly, including all docstrings.

Some thoughts on this:

• only native python types are supported by omegaconf -> the parser will have to convert complex and custom types into those.
• This should be a standalone script and can probably have a public facing interface (There are some pip options for this, so that you can call the script from anywhere).
• The script could have an option to automatically add those files to a hydra config-store, so that there would be minimal human adjustment needed.