Let's add a GitHub label made-with-che into the product related GitHub repositories to mark opened PRs that were created using dogfooding instances.

It will help analyzing how often dogfooding instances are used for regular work.

List of repositories:
https://github.com/redhat-developer/devspaces-images
https://github.com/redhat-developer/devspaces
https://github.com/eclipse-che/che-operator
https://github.com/che-incubator/chectl
https://github.com/eclipse-che/che-server
https://github.com/eclipse-che/che-dashboard
https://github.com/eclipse-che/che-devfile-registry
https://github.com/eclipse-che/che-plugin-registry

It was already done for che-code repository: https://github.com/che-incubator/che-code/labels/made-with-che