chore: import upstream snapshot with attribution

components/esp_common/include/esp_err_msg.h

@@ -0,0 +1,29 @@
+/*
+ * SPDX-FileCopyrightText: 2026 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#pragma once
+
+#include "esp_err.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @brief Structure describing an error code entry for the link-time error table.
+ *
+ * Components register their error codes by placing arrays of this structure
+ * into the ".esp_err_msg_tbl" linker section. The esp_err_to_name() function
+ * iterates over all such entries at runtime.
+ */
+typedef struct {
+    esp_err_t code;     /*!< Error code value */
+    const char *msg;    /*!< String representation of the error code name */
+} esp_err_msg_t;
+
+#ifdef __cplusplus
+}
+#endif