### 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

for child in self.ast.body:
            names = []
            if isinstance(child, ast.Import):
                names.extend(child.names)
            elif isinstance(child, TRY_EXCEPT):
                bodies = child.body
                for handler in child.handlers:
                    bodies.extend(handler.body)
                for grandchild in bodies:
                    if isinstance(grandchild, ast.Import):
                        names.extend(grandchild.names)
            for name in names:
                
                for blacklist_import, options in BLACKLIST_IMPORTS.items():
                    if re.search(blacklist_import, name.name):
                        new_only = options['new_only']
                        if self._is_new_module() and new_only:
                            self.reporter.error(
                                path=self.object_path,
                                **options['error']
                            )
                        elif not new_only:
                            self.reporter.error(
                                path=self.object_path,
                                **options['error']
                            )
    def _find_module_utils(self, main):