### SUMMARY

Update validate-modules to report messages using named error codes like `version-added` instead of error numbers like `E305`.

This would match the behavior of other tools we use, such as pylint, which have one named error code per rule. This will also make ignore entries much easier to read.

Doing this before 2.9 is released will avoid potential backwards compatibility issues with ignore entries in collections.

##### ISSUE TYPE

Feature Idea

##### COMPONENT NAME

validate-modules

if 'deprecated' in metadata['status']:
                    deprecated = True
                if (deprecated or removed) and len(metadata['status']) > 1:
                    self.reporter.error(
                        path=self.object_path,
                        code=333,
                        msg='ANSIBLE_METADATA.status  must be exactly one of "deprecated" or "removed"'
                    )
        if not removed:
            if not bool(doc_info['DOCUMENTATION']['value']):
                self.reporter.error(
                    path=self.object_path,
                    code=301,
                    msg='No DOCUMENTATION provided'
                )
            else:
                documentation_exists = True
                doc, errors, traces = parse_yaml(
                    doc_info['DOCUMENTATION']['value'],
                    doc_info['DOCUMENTATION']['lineno'],
                    self.name, 'DOCUMENTATION'
                )
                for error in errors:
                    self.reporter.error(
                        path=self.object_path,
                        code=302,
                        **error
                    )
                for trace in traces:
                    self.reporter.trace(