Quick repository feedback

[toastal]

• Remove OS files (add to .gitignore so they don’t come back)
• Add Editorconfig for consistent whitespace
• Add .envrc to automatically Nix shell when Nix is present
• Add ‘file type’ (shell-session) to README blocks
• Remove excess backticks in README
• Add a devShell to get tools for Nix users
• Update Flakes

[MatthewCroughan]

Update Flakes

What do you mean by update Flakes? The Flake is as up to date as it can be, currently.

Add ‘file type’ (shell-session) to README blocks

I'm not sure what this means, can you tell me more?

The rest I understand and will endeavor to fix.

[MatthewCroughan]

My bad, I mistook this for an issue, not a PR. What you've done is clear from the commit. Thank you.