Improve schema properties configuration mechanism

[justinccdev]

At the moment, there is a bioschemas.__init__.py.DEFAULT_CONFIG but no easy way to override or replace it for a user (tests have their own mechanism). Need to make this easier to configure without having to a change a file under source control. I'm thinking we can keep the python format but have it as conf/bsbang-conf.py or similar.

[innovationchef]

In Issue #4 , It is mentioned that - bsbang-crawl does a very hokey top-level crawl of the JSON-LD captured. This only captures a very small amount of information, mainly because this was for proof of concept The current DEFAULT_CONFIG is what you are referring to, right? So do you want a system such that the users can give their own CONFIG for crawl?

[justinccdev]

Yes, allowing users to easily put in or override parts of the default config is what this is about. But currently, no config will allow indexing of the JSON-LD deeper than the very first layer of basic properties (e.g. in a Bioschemas DataCatalog it can grab the description and keywords when properly configured, but will do nothing with the provider since that's an embedded Person/Organization structure (and even deeper, Person itself potentially has lots of complex properties like Person.affiliation).

Handling this relies on some resolution of #4, though that in itself will need some sane way to configure the depth of the search (e.g. that we want DataCatalog.provider but not DataCatalog.provider.affiliation).