AWS::Config::ConfigRule support tagging

1. Title -> AWS::Config::ConfigRule

2. Scope of request -> Cloudformation resource AWS::Config::ConfigRule doesn't appear to support tags (but the API and CLI do support tags).

3. Expected behavior -> It should be possible to tag a config rule (as the IAM conditions for PutConfigRule are based on tags).

4. Test case recommendation (optional)

5. Links to existing API doc (optional) ->
PutConfigRule API - https://docs.aws.amazon.com/config/latest/APIReference/API_PutConfigRule.html#config-PutConfigRule-request-Tags
CFN Config Rule - https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-config-configrule.html

6. Category tag (optional) -> Management

7. Any additional context (optional)

Start by comparing the AWS::Config::ConfigRule CloudFormation resource documentation with the PutConfigRule API documentation, especially the Tags request field. Determine where this roadmap repository records coverage work, then confirm that the resource can accept tags and that the result supports the stated IAM tag conditions.

Written by the indexing model from the issue text.