Feature request: add ability to not automatically download or load resource data to enable more thorough testing

[elenya-grant]

Resource data initialization flexibility

in SolarResource, WindResource, HPCWindData and HPCSolarData - resource data is (or attempted to be) downloaded or loaded and formatted within the class initialization. In the case of the HPC resource data - this prevents testing of other functions due to errors raised when the file cannot be loaded (which is the case with any local testing). (Note - these classes live in hopp/simulation/technologies/resource/)

Another add-in that may be relevant here is to add the ability to save wind and solar resource data loaded from HPC datasets to a user-specified location (option to save it externally from the .h5 datasets hosted on HPCs - in a place like /scratch/user/resource_files/).

Proposed solution

• add optional input to SiteInfo and Resource classes to download/load data or not
• split some functionality from __init__() methods in these Resource classes into functions (ex: create_filepath(self))

Alternatives considered

Additional context

This is being requested based on conversations in PR #414