Allow multiple granularities in jobs

[lboeman]

There are a couple quirks in the use cases in the compare case between uploading actual power on a site-level vs inverter level.

If I upload site level, I am really only interested in getting site-level weather adjusted in return, as mentioned above.

If I upload inverter-level, I can't also upload site level. So that limits the use case there to just being inverter level comparisons. That all works, and the results are very useful for that. However, without the site-level meter data I don't need the site-level comparisons that the tool returns. So the Monthly Summary results table and results download become kind of extraneous, because I am going to want to have those with meter data, not inverter sums in most cases.

This is all just quality of life. But ideally, I could upload both the site level actual power and inverter level power at the same time. As it stands now I need to do the comparison workflow twice, once to get useful site-level results and once to get useful inverter level results.

It might not be worth the coding time to fix this. As a user I could always just run the inverter level version of the tool, download the results, and then on my end just use my meter data to make the site-level comparisons. But I do think it would be compelling to eventually be able to do that all in one go in SPI.

Originally posted by @ncroft-b4 in #180 (comment)