Clarify description of goal "sign-and-deploy-file"

[kwin]

New feature, improvement proposal

Currently it just states in https://maven.apache.org/plugins/maven-gpg-plugin/sign-and-deploy-file-mojo.html

Signs artifacts and deploys the artifacts and signatures in the remote repository.

It should state the API being used for deployment (the POST approach built into Maven Resolver) which is not compatible with all remote repos nowadays. Probably adding a link to https://github.com/maveniverse/njord would be helpful as well.

[kwin]

Another option is to deprecate that goal as it mixes two different concerns which are better handled by two separated Maven plugins.