DataStore.get_data_ids() to return minimum set of attributes

[forman]

Is your feature request related to a problem? Please describe.

So far, all clients of the xcube data store framework require at least a dataset title in addition to the sole dataset ID returned by DataStore.get_data_ids() instance method. The CCI Toolbox now requires another attribute namely "verification_flags" together with the "title"attribute for each ID returned.

Describe the solution you'd like

Add keyword-argument include_attrs: Sequence[str] = None to DataStore.get_data_ids(). In case it is given, a list of tuples each comrising dataset id and attribute dictionary is returned.

Describe alternatives you've considered

Returning "verification_flags" as part of the data store metadata given in extension point registration.

Additional context

• CCI Toolbox Cate
• Speed-up loading of available datasets CCI-Tools/cate-app#120