Fix conflicting settings

[martincostello]

Fix Git and EditorConfig having conflicting line-ending settings and standardise on CRLF (as that was the oldest setting committed to Git).

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 93.55%. Comparing base (50f6811) to head (d970455).
Report is 1 commits behind head on master.

✅ All tests successful. No failed tests found.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #3430   +/-   ##
=======================================
  Coverage   93.55%   93.55%           
=======================================
  Files         110      110           
  Lines        3834     3834           
  Branches      719      719           
=======================================
  Hits         3587     3587           
  Misses        247      247           

Flag	Coverage Δ
Linux	93.55% <ø> (ø)
Windows	93.55% <ø> (ø)
macOS	93.55% <ø> (ø)

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[Copilot]

Pull Request Overview

Aims to standardize line endings to CRLF across Git and EditorConfig.

• Update default Git attribute to CRLF
• Normalize .editorconfig end_of_line value to lower-case crlf

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

File	Description
.gitattributes	Changed default eol from LF to CRLF and removed UNIX comment
.editorconfig	Updated end_of_line value from CRLF to crlf