mps-cli-py: extended SModel class to include imported models

[btakim]

There is a need to analyze imported models when the model is read to be able to get the right model dependency graph. Added tests for model imports.

[Prithvi686]

Hi @btakim ,

The changes look good to me! Thanks for this extension, however I just have one small comment here - extract_imported_models() parses the same XML twice for every model I think - once in extract_model_core_info for the new imported_models field and again in extract_imports_and_registry for index_2_imported_model_uuid.

Not wrongg, just doing the same work twice. Could we pass the dict through instead of recomputing it? But I think we can also leave this as a follow-up and fix it later...

[btakim]

@Prithvi686 thanks for catching the issue, seperated registry extraction from model import extraction now. I think registry can also be part of the SModel later but for now that looks okey. I hope the change is satisfactory, please let me know if you have any further ideas for improvement. Thanks!

[Prithvi686]

@Prithvi686 thanks for catching the issue, seperated registry extraction from model import extraction now. I think registry can also be part of the SModel later but for now that looks okey. I hope the change is satisfactory, please let me know if you have any further ideas for improvement. Thanks!

@btakim thanks for the fix, it looks good to me now!