Update CI + add example

[olivroy]

• Add example
• Update github actions (used config/needs/* as necessary to use the standard actions.
• Run styler
• Add RStudio config to strip trailing whitespace

Related Issue

Fix #540

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 100.00%. Comparing base (81702b6) to head (22051d2).

Additional details and impacted files

@@            Coverage Diff            @@
##              main      #591   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           27        27           
  Lines         1413      1413           
=========================================
  Hits          1413      1413           

Files with missing lines	Coverage Δ
R/clean_names.R	100.00% <100.00%> (ø)