Integrate with an ISO to receive grid signals

[shankari]

Since CharIN is in California, we will want to integrate with the California MIDAS API
https://www.energy.ca.gov/publications/2021/market-informed-demand-automation-server-midas-documentation-version-12

Design considerations:

• Language: Their existing examples are in python, R, curl and csharp. Our potential CSMSes use go (MaEVe) and javascript (Citrine)
• Authentication: username + password based (can be used for a single script), or cert based

Given the time frame, I would suggest that we hack together something with username + password, and curl to pull data and send it to the CSMS.

Can refine further once that is done

[shankari]

I will do this after #78