Support image name and tag with digest file

Currently, Jib is supporting the generation of an image digest file (Cf. [Extended Usage](https://github.com/GoogleContainerTools/jib/tree/master/jib-maven-plugin#outputpaths-object)) with the following format `sha256:ba7816...`.

It could be helpful to support the image name with digest (`my-org/my-image@sha256:ba7816...`) and the image name + tag with the digest (`my-org/my-image:1.0.0@sha256:ba7816...`).

Kaniko is supporting it through the flags `--image-name-with-digest-file` and `--image-name-tag-with-digest-file`.