feat: save all inputs in standardized locations, use on extract

[danielolsen]

Pull Request doc

Purpose

Following discussion in #108, we:

• save, in standardized locations, all relevant inputs that the user provides to the prepare_inputs function.
• refactor the get_output_scenarios function to take only the root folder that inputs were prepared into, so that we can automatically use the standardized locations to load relevant data for output processing

What the code is doing

In prepare.py, we save all user inputs that will be relevant for processing outputs, in a new subfolder of the switch inputs root names.

In switch_extract.py, we change the get_output_scenarios function to only require the switch project folder, since we know where all other files will live relative to this root.

Usage example

from switchwrapper.switch_extract import get_output_scenarios
scenarios = get_output_scenarios("prepared")

Time estimate

15 minutes.

[BainanXia]

Indeed, it looks cleaner!

[danielolsen]

When rebased onto the latest commits from #104, this runs successfully end-to-end. Scenario preparation as in #104, and extraction as:

from switchwrapper.switch_extract import get_output_scenarios
scenarios = get_output_scenarios("prepared")