Auto merge of #60025 - JohnTitor:rename-files, r=petrochenkov

Rename files about error codes

fixes #60017

This PR will be failed in tidy.

<details>
<summary>The log is here:</summary>

```
tidy check
tidy error: duplicate error code: 411
tidy error: Documents\GitHub\rust\src\librustc_resolve\diagnostics.rs:83:             __diagnostic_used!(E0411);
tidy error: Documents\GitHub\rust\src\librustc_resolve\diagnostics.rs:84:             err.code(DiagnosticId::Error("E0411".to_owned()));
tidy error: duplicate error code: 424
tidy error: Documents\GitHub\rust\src\librustc_resolve\diagnostics.rs:90:             debug!("smart_resolve_path_fragment: E0424, source={:?}", source);
tidy error: Documents\GitHub\rust\src\librustc_resolve\diagnostics.rs:92:             __diagnostic_used!(E0424);
tidy error: Documents\GitHub\rust\src\librustc_resolve\diagnostics.rs:93:             err.code(DiagnosticId::Error("E0424".to_owned()));
some tidy checks failed
```

</details>

I'd like to fix this but I don't know what to do.
I will work on later. Please let me know if you have any solutions.

r? @petrochenkov

2 files changed, 1 insertions, 1 deletions

diff --git a/src/libsyntax_ext/diagnostics.rs b/src/libsyntax_ext/error_codes.rs
index 9bbd9fdec17..9bbd9fdec17 100644
--- a/src/libsyntax_ext/diagnostics.rs
+++ b/src/libsyntax_ext/error_codes.rs
diff --git a/src/libsyntax_ext/lib.rs b/src/libsyntax_ext/lib.rs
index 8371d272075..508f740cac9 100644
--- a/src/libsyntax_ext/lib.rs
+++ b/src/libsyntax_ext/lib.rs
@@ -17,7 +17,7 @@
 
 extern crate proc_macro;
 
-mod diagnostics;
+mod error_codes;
 
 mod asm;
 mod assert;