Refactor REISE.jl to comply with a standard style guide

[lanesmith]

:rocket:

• [ ] Is your feature request essential for your project?

Describe the workflow you want to enable

There would be no change to how users interact with REISE.jl or how REISE.jl functions.

Describe your proposed implementation

Refactor the modules of REISE.jl to follow a single standard style guide. In the past, we have discussed following the Blue style guide.

[danielolsen]

We should probably also add an automated workflow to check compliance for new code, like we do for black.

[rouille]

You can also create a docs folder enclosing the details of the model (equations, etc.) that would be written in ReST (great for LaTeX!) and have a more succinct README as we have for PowerSimData.