Tagging new Version also with `$MAJOR` and `$MAJOR.$MINOR`

[michix]

Is your feature request related to a problem? Please describe. I would like to automatically upgrade the Wallabag docker container on my server. Since semantic versioning is used in the project and I am currently on Version 2.6.6, I would like to be able to upgrade automatically to the newest Version 2.6.

Describe the solution you'd like It would be great that for each new release not only the tags latest and $MAJOR.$MINOR.$PATCH are use but also $MAJOR and $MAJOR.$MINOR. This way, one is able to always obtain the latest $MAJOR or $MAJOR.$MINOR version of Wallabag.

Describe alternatives you've considered I guess this is a common standard.

Additional context None.