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-completion/src/render/function.rs

@@ -53,7 +53,7 @@ fn render(
     let (call, escaped_call) = match &func_kind {
         FuncKind::Method(_, Some(receiver)) => (
             format!("{}.{}", receiver.unescaped(), name.unescaped()).into(),
-            format!("{}.{}", receiver, name).into(),
+            format!("{receiver}.{name}").into(),
         ),
         _ => (name.unescaped().to_smol_str(), name.to_smol_str()),
     };
@@ -162,7 +162,7 @@ pub(super) fn add_call_parens<'b>(
     cov_mark::hit!(inserts_parens_for_function_calls);
 
     let (snippet, label_suffix) = if self_param.is_none() && params.is_empty() {
-        (format!("{}()$0", escaped_name), "()")
+        (format!("{escaped_name}()$0"), "()")
     } else {
         builder.trigger_call_info();
         let snippet = if let Some(CallableSnippets::FillArguments) = ctx.config.callable {
@@ -174,7 +174,7 @@ pub(super) fn add_call_parens<'b>(
                             let smol_str = n.to_smol_str();
                             let text = smol_str.as_str().trim_start_matches('_');
                             let ref_ = ref_of_param(ctx, text, param.ty());
-                            f(&format_args!("${{{}:{}{}}}", index + offset, ref_, text))
+                            f(&format_args!("${{{}:{ref_}{text}}}", index + offset))
                         }
                         None => {
                             let name = match param.ty().as_adt() {
@@ -185,7 +185,7 @@ pub(super) fn add_call_parens<'b>(
                                     .map(|s| to_lower_snake_case(s.as_str()))
                                     .unwrap_or_else(|| "_".to_string()),
                             };
-                            f(&format_args!("${{{}:{}}}", index + offset, name))
+                            f(&format_args!("${{{}:{name}}}", index + offset))
                         }
                     }
                 });
@@ -200,12 +200,12 @@ pub(super) fn add_call_parens<'b>(
                     )
                 }
                 None => {
-                    format!("{}({})$0", escaped_name, function_params_snippet)
+                    format!("{escaped_name}({function_params_snippet})$0")
                 }
             }
         } else {
             cov_mark::hit!(suppress_arg_snippets);
-            format!("{}($0)", escaped_name)
+            format!("{escaped_name}($0)")
         };
 
         (snippet, "(…)")

crates/ide-completion/src/render/macro_.rs

@@ -66,7 +66,7 @@ fn render(
 
     match ctx.snippet_cap() {
         Some(cap) if needs_bang && !has_call_parens => {
-            let snippet = format!("{}!{}$0{}", escaped_name, bra, ket);
+            let snippet = format!("{escaped_name}!{bra}$0{ket}");
             let lookup = banged_name(&name);
             item.insert_snippet(cap, snippet).lookup_by(lookup);
         }

crates/ide-completion/src/render/variant.rs

@@ -35,8 +35,8 @@ pub(crate) fn render_record_lit(
     });
 
     RenderedLiteral {
-        literal: format!("{} {{ {} }}", path, completions),
-        detail: format!("{} {{ {} }}", path, types),
+        literal: format!("{path} {{ {completions} }}"),
+        detail: format!("{path} {{ {types} }}"),
     }
 }
 
@@ -49,7 +49,7 @@ pub(crate) fn render_tuple_lit(
     path: &str,
 ) -> RenderedLiteral {
     if snippet_cap.is_none() {
-        return RenderedLiteral { literal: format!("{}", path), detail: format!("{}", path) };
+        return RenderedLiteral { literal: format!("{path}"), detail: format!("{path}") };
     }
     let completions = fields.iter().enumerate().format_with(", ", |(idx, _), f| {
         if snippet_cap.is_some() {
@@ -62,8 +62,8 @@ pub(crate) fn render_tuple_lit(
     let types = fields.iter().format_with(", ", |field, f| f(&field.ty(db).display(db)));
 
     RenderedLiteral {
-        literal: format!("{}({})", path, completions),
-        detail: format!("{}({})", path, types),
+        literal: format!("{path}({completions})"),
+        detail: format!("{path}({types})"),
     }
 }