build core-cge-ml module

[Rashmil-1999]

In this PR I have added a new module called the Core CGE ML where the idea is to implement all repetitive actions related to CGE ML here. Since loads of models will come in, we will create a wrapper class for that testbed and keep model coefficients, base values, and the related files in that analysis folder. The core CGE ML will be imported, fed the data it needs, and spit out the outputs. That will be the goal of all future analysis implementations about CGE ML.

Possible modification I can see -

• [Current] Right now the implemented wrapper class will have to extract all the required data and feed it to the core class. The reason for doing this was to avoid possible future file structure changes that will lead to modifying the core again. Hence, I left the parsing part for analysis to implement.
• [Improvement] Maybe assume file structure to write general implementations and add an optional argument to accept a parsing function.

Note: Since we will be implementing the analyses so I don't know if this improvement is really needed or not. We could easily structure inputs as required by the Core CGE class.

let me know what your thoughts are and what changes can be made.

[Rashmil-1999]

I have added the implementation of mmsa cge with a test_mmsacge.py file. all you need to do is to run this to test it. Main thing to look for is improvements in implementation or some modification.

[longshuicy]

• left the parsing part for analysis to implement.

Maybe for now you can put the parsing part in a util (instead of on the mmsa class) so in the future other testbed can still reuse them? Just a thought.

[Rashmil-1999]

• left the parsing part for analysis to implement.

Maybe for now you can put the parsing part in a util (instead of on the mmsa class) so in the future other testbed can still reuse them? Just a thought.

yeah, if we can standardize the input files from the econ teams, we can shift it to the core class itself...

[navarroc]

To fix the unit tests, I uploaded new files. Can you replace the following?

660d9435ce705a7e547a664e replaces 642f66e5f27db6680103c4ad 660d95bece705a7e547a6654 replaces 642f6230f27db66801038964 660d97bfce705a7e547a6659 replaces 642f6495f27db66801039434

[navarroc]

I tested slc cge with this PR and results look good and match results I saved from the SLC CGE branch before it got merged into this branch. Just a few minor things with the copyright. I have not looked through the code exhaustively.