Changes to list registries

added the new optional query request parameter ecosystem

added the required property items/purl_type to the response with the 200 status

the response property items/keywords_count became required for the status 200

the response property items/namespaces_count became required for the status 200

added the required property items/downloads to the response with the 200 status

added the optional property items/versions_count to the response with the 200 status

added the required property items/icon_url to the response with the 200 status

added the optional property items/keywords_count to the response with the 200 status

added the optional property items/namespaces_count to the response with the 200 status

the response property items/github became nullable for the status 200

the response property items/metadata became nullable for the status 200

the response property items/created_at became required for the status 200

the response property items/default became required for the status 200

the response property items/ecosystem became required for the status 200

the response property items/github became required for the status 200

the response property items/maintainers_count became required for the status 200

the response property items/maintainers_url became required for the status 200

the response property items/metadata became required for the status 200

the response property items/name became required for the status 200

the response property items/packages_count became required for the status 200

the response property items/packages_url became required for the status 200

the response property items/updated_at became required for the status 200

the response property items/url became required for the status 200

api tag registries added

added the optional property items/maintainers_count to the response with the 200 status

added the optional property items/maintainers_url to the response with the 200 status

added the optional property items/github to the response with the 200 status