Suggestion: Add list of useful bounding boxes

[meggart]

For the Julia interface I created a list of bounding boxes of all SREX regions and countries (https://github.com/CAB-LAB/CABLAB.jl/blob/master/src/CubeAPI/countrydict.jl#L298), so that to read data from a certain region one does not have to type look for and type the lon/lat boundaries. For example readCubeData(cube,region="Amazon") is a shortcut for readCubeData(cube,lon=(-79.7,-50.0),lat=(-20.0,11.4)) Would such a list be useful for the Python interface, too?

I could create a similar file like countrydict.jl defining a dict with python syntax.