Clean up BOTMETA.yml (#44574)

This PR includes:
- Removal of maintainers that are listed as author in the module
- Removal of entries that do not extend the original author list
- Move ignored-statement to namespace/directory (where useful)
- In some cases, fix the authors-list or add missing github id

We end up with a list of exceptions/additions and a large set of
namespace/directory maintainers or team of maintainers.

Some entries could be further improved by discussing with some
maintainers.

lib/ansible/modules/cloud/amazon/route53_facts.py

@@ -110,7 +110,7 @@ options:
         'tags',
         ]
     default: 'list'
-author: Karen Cheng(@Etherdaemon)
+author: Karen Cheng (@Etherdaemon)
 extends_documentation_fragment:
   - aws
   - ec2