Harmony rules for Codex

Relevant drafts and information are located in ./drafts/ and is named according to the topic.
For simple edits, limit testing to net9 and x64.
Use the latest C# language features, like var, shorter array syntax etc. Longer than usual lines (~ 140 chars are ok)
During editing C# files, don't bother with formatting. Instead, run dotnet format at the end to format the code - it will respect the .editorconfig file.