Inline all format arguments where possible

This makes code more readale and concise,
moving all format arguments like `format!("{}", foo)`
into the more compact `format!("{foo}")` form.

The change was automatically created with, so there are far less change
of an accidental typo.

```
cargo clippy --fix -- -A clippy::all -W clippy::uninlined_format_args
```

crates/ide-diagnostics/src/handlers/unresolved_proc_macro.rs

@@ -26,7 +26,7 @@ pub(crate) fn unresolved_proc_macro(
     };
 
     let message = match &d.macro_name {
-        Some(name) => format!("proc macro `{}` not expanded", name),
+        Some(name) => format!("proc macro `{name}` not expanded"),
         None => "proc macro not expanded".to_string(),
     };
     let severity = if config_enabled { Severity::Error } else { Severity::WeakWarning };