Enforce writing log::<op>!(...) in CODE_STYLE.md
@@ -124,3 +124,4 @@ C: Into<String>, { ... }
1. Use `Into<...>` only where there exists at least one conversion **and** it will be logically to use.
2. Always mark a function as `#[must_use]` if its return value **must** be used.
3. `Box::pin(async [move] { ... })` instead of `async [move] { ... }.boxed()`.
+ 4. Always write `log::<op>!(...)` instead of importing `use log::<op>;` and invoking `<op>!(...)`. For example, write `log::info!("blah")`.
