Implement .use keyword as an alias of clone

compiler/rustc_parse/src/errors.rs

@@ -106,6 +106,19 @@ pub(crate) struct IncorrectUseOfAwait {
     pub span: Span,
 }
 
+#[derive(Diagnostic)]
+#[diag(parse_incorrect_use_of_use)]
+pub(crate) struct IncorrectUseOfUse {
+    #[primary_span]
+    #[suggestion(
+        parse_parentheses_suggestion,
+        style = "verbose",
+        code = "",
+        applicability = "machine-applicable"
+    )]
+    pub span: Span,
+}
+
 #[derive(Subdiagnostic)]
 #[multipart_suggestion(
     parse_incorrect_use_of_await_postfix_suggestion,