Document and standardize workflows

[padamson]

Workflows for code throughs are (slightly) inconsistent.

Need to document, standardize, and streamline workflows for each code through:

• manage R environment with renv
• switch from RMarkdown to Quarto
• download proprietary data and confirm all code works
• document standardized workflow
• clean up each chapter and align with workflow
• conform to tidyverse style guide
• describe each package's purpose first use
• minimize external package dependency

[padamson]

added management of R environment with renv in 5b309c8

[padamson]

cleaned up chapter2.qmd in 0162979