Generation to pass through resource data

[grantbuster]

Why this feature is necessary:
We have had many cases where users want to pass through resource data (ghi, wind speed, etc...) for downstream analysis. It makes sense that the generation module would make this possible. Even though this is feature drift, the generation architecture should make this easy to implement.

A possible solution is:
In the generation module, copy the requested resource data to the outs dictionary. Use a method similar to the resource mean computation.

I have considered the following alternatives:
Scripts. Gen architecture is better.

[grantbuster]

Closed in #72