Add `ReadIndustry` class for Industrial demand

[trevorb1]

Feature Request

PR #300 introduces writing of disaggregated industrial data. Next, we need to add in the reading of industrial data. While EFS has industrial data, it is only electrical data. Expanding this for other energy sectors is required.

Suggested Solution

I believe we will need three sources for this:

1. The United States County-Level Industrial Energy Use data. This gives couty level industry use by end-use fuel in 2014.
2. The EPRI Load Shape Library to distribute the annual data into hourly load profiles based on sector. I am a little uncertain how still to handle cooling load, so this may get grouped into electrical load
3. The AEO to scale annual load data to match the modelled year (relates to issue #276)

Additional Info

No response