Add the facility active proportion field

[natemcintosh]

Nate's Summary

Added the new field, tests, and docstrings. I think I got it into all the necessary places, but it's been a few months since I worked with this repo so I may have forgotten something.

Copilot's Summary

This pull request introduces a new parameter, facility_active_proportion, to the EpiNow2 configuration generation pipeline. This parameter represents the minimum proportion of days a facility must be active during the modeling period and is integrated across multiple functions, constants, and tests to ensure proper handling and validation.

Core Feature Addition:

• Introduced facility_active_proportion as a new argument to configuration generation functions (generate_config, generate_rerun_config, generate_backfill_config, and generate_task_configs). It is validated to ensure it is a float between 0 and 1, with a default value of 1.0. [1] [2] [3] [4]

Configuration and Constants Updates:

• Added facility_active_proportion to the default configuration constants and included it in the list of required parameters for task generation. [1] [2]
• Updated the extract_user_args function to parse facility_active_proportion from environment variables, with error handling for invalid formats. [1] [2]

Validation Enhancements:

• Extended the validate_args function to include validation logic for facility_active_proportion, ensuring it is a valid float within the acceptable range. [1] [2]

Test Coverage:

• Updated existing test cases and added new assertions to verify that facility_active_proportion is correctly passed, validated, and included in generated configurations. [1] [2] [3]
• Added tests to ensure the default value of facility_active_proportion is correctly applied when not explicitly provided. [1] [2]

[kgostic]

At a very high level lgtm. Thanks for being on top of keeping this in sync.

[athowes]

I don't know the codebase well enough to have a good handle on all the places that facility_active_proportion should be included. What you have seems reasonable. I've just added a few conceptual comments.