Rollup merge of #75209 - Hirrolot:suggest-macro-imports, r=estebank

Suggest imports of unresolved macros

Closes https://github.com/rust-lang/rust/issues/75191.

compiler/rustc_resolve/src/diagnostics.rs

@@ -922,6 +922,17 @@ impl<'a> Resolver<'a> {
         );
         self.add_typo_suggestion(err, suggestion, ident.span);
 
+        let import_suggestions = self.lookup_import_candidates(
+            ident,
+            Namespace::MacroNS,
+            parent_scope,
+            |res| match res {
+                Res::Def(DefKind::Macro(MacroKind::Bang), _) => true,
+                _ => false,
+            },
+        );
+        show_candidates(err, None, &import_suggestions, false, true);
+
         if macro_kind == MacroKind::Derive && (ident.name == sym::Send || ident.name == sym::Sync) {
             let msg = format!("unsafe traits like `{}` should be implemented explicitly", ident);
             err.span_note(ident.span, &msg);