commons.j2 :: make | xsd type formatting detect the value type or try out converting it

[mpo-vliz]

we currently expect the type to produce is known and directed from the template - i.e. passed as the argument | xsd('int') will lead to type-assessment + addition of ^^xsd:int

however, we can think about cases where the data itself is typed (as a python int, float, ... datetime, ...) and something like | xsd('auto') could be used to indicate we want to have the python type detected and converted into the matching ^^xsd format

additionally, we could also know about all values to be strings (as they come from csv, yml, json, or xml sources) and ask the template to try out applying a certain order of conversions | xsd('try', ['int', ...] ) to take the first one that actually matches