Adds documentation for customizing residential workflows.

[tanushree04]

Addresses #164

Pull Request Description

Adds documentation to customize residential workflows using TSV files and feature file.

Checklist (Delete lines that don't apply)

• [x] Documentation has been modified appropriately
• [x] An ISSUE has been created that this is addressing. Issues will get added to the Change Log when the change_log.rb script is run
• [x] This branch is up-to-date with develop