Auto merge of #125443 - nnethercote:rustfmt-use-decls, r=lcnr,cuviper,GuillaumeGomez

rustfmt `use` declarations

This PR implements https://github.com/rust-lang/compiler-team/issues/750, which changes how `use` declarations are formatted by adding these options to `rustfmt.toml`:
```
group_imports = "StdExternalCrate"
imports_granularity = "Module"
```

r? `@ghost`

1 files changed, 10 insertions, 11 deletions

diff --git a/compiler/rustc_ast_lowering/src/path.rs b/compiler/rustc_ast_lowering/src/path.rs
index ac36b074609..077b06acd7c 100644
--- a/compiler/rustc_ast_lowering/src/path.rs
+++ b/compiler/rustc_ast_lowering/src/path.rs
@@ -1,13 +1,3 @@
-use crate::ImplTraitPosition;
-
-use super::errors::{
-    AsyncBoundNotOnTrait, AsyncBoundOnlyForFnTraits, BadReturnTypeNotation,
-    GenericTypeWithParentheses, UseAngleBrackets,
-};
-use super::ResolverAstLoweringExt;
-use super::{GenericArgsCtor, LifetimeRes, ParenthesizedGenericArgs};
-use super::{ImplTraitContext, LoweringContext, ParamMode};
-
 use rustc_ast::{self as ast, *};
 use rustc_data_structures::sync::Lrc;
 use rustc_hir as hir;
@@ -17,10 +7,19 @@ use rustc_hir::GenericArg;
 use rustc_middle::span_bug;
 use rustc_span::symbol::{kw, sym, Ident};
 use rustc_span::{BytePos, DesugaringKind, Span, Symbol, DUMMY_SP};
-
 use smallvec::{smallvec, SmallVec};
 use tracing::{debug, instrument};
 
+use super::errors::{
+    AsyncBoundNotOnTrait, AsyncBoundOnlyForFnTraits, BadReturnTypeNotation,
+    GenericTypeWithParentheses, UseAngleBrackets,
+};
+use super::{
+    GenericArgsCtor, ImplTraitContext, LifetimeRes, LoweringContext, ParamMode,
+    ParenthesizedGenericArgs, ResolverAstLoweringExt,
+};
+use crate::ImplTraitPosition;
+
 impl<'a, 'hir> LoweringContext<'a, 'hir> {
     #[instrument(level = "trace", skip(self))]
     pub(crate) fn lower_qpath(