Docs: Add page about HIP error codes

docs/how-to/hip_runtime_api/error_handling.rst

@@ -37,6 +37,8 @@ Best practices of HIP error handling:
 For more details on the error handling functions, see :ref:`error handling
 functions reference page <error_handling_reference>`.
 
+For a list of all error codes, see :ref:`HIP error codes <hip_error_codes>`.
+
 .. _hip_check_macros:
 
 HIP check macros

docs/index.md

@@ -43,6 +43,7 @@ The HIP documentation is organized into the following categories:
 * [HIP runtime API](./reference/hip_runtime_api_reference)
 * [HIP math API](./reference/math_api)
 * [HIP environment variables](./reference/env_variables)
+* [HIP error codes](./reference/error_codes)
 * [CUDA to HIP API Function Comparison](./reference/api_syntax)
 * [List of deprecated APIs](./reference/deprecated_api_list)
 * [Low Precision Floating Point Types](./reference/low_fp_types)