### 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 context:
                    msg += " found in %s" % " -> ".join(context)
                msg += " defines default as (%r) but this is incompatible with parameter type %r" % (doc_options_arg.get('default'), _type)
                self.reporter.error(
                    path=self.object_path,
                    code=327,
                    msg=msg
                )
                continue
            if arg_default != doc_default:
                msg = "Argument '%s' in argument_spec" % arg
                if context:
                    msg += " found in %s" % " -> ".join(context)
                msg += " defines default as (%r) but documentation defines default as (%r)" % (arg_default, doc_default)
                self.reporter.error(
                    path=self.object_path,
                    code=324,
                    msg=msg
                )
            doc_type = docs.get('options', {}).get(arg, {}).get('type')
            if 'type' in data and data['type'] is not None:
                if doc_type is None:
                    if not arg.startswith('_'):  
                        msg = "Argument '%s' in argument_spec" % arg
                        if context:
                            msg += " found in %s" % " -> ".join(context)
                        msg += " defines type as %r but documentation doesn't define type" % (data['type'])
                        self.reporter.error(
                            path=self.object_path,
                            code=337,