Add a canonical rustfmt config

content/wiki/formatting_scheme.md

@@ -21,9 +21,24 @@ Shaders are usually licensed under the former two licenses OR the Unlicense.
 Most Linebender projects files are written in Rust.
 For those files, the formatting produced by `rustfmt` is required.
 
+The following rustfmt config is recommended:
+
+```toml
+# LINEBENDER RUSTFMT CONFIG - v1
+# Ensure lines end with \n even if the git configuration core.autocrlf is not set to true
+newline_style = "Unix"
+
+# `Foobar { foo, bar }` is more readable than `Foo { foo: foo, bar: bar }`
+use_field_init_shorthand = true
+
+# Commented out because it is still unstable, but works fine in practice.
+# imports_granularity = "Module"
+
+# END LINEBENDER RUSTFMT CONFIG
+```
+
 ## Markdown
 
 In Markdown files, every paragraph should have one line per sentence.
 This makes git diff easier to read.
 [[1]](https://nick.groenen.me/notes/one-sentence-per-line/) [[2]](https://sive.rs/1s)
-