I think this plugin should show up in category "Security" in "Manage Jenkins" page of modern Jenkins releases (currently it is "Uncategorized"):

• implementation in analogy to e.g. https://github.com/jenkinsci/credentials-plugin/compare/credentials-2.3.3...credentials-2.3.4 or https://github.com/jenkinsci/configuration-as-code-plugin/pull/1358
• see https://github.com/jenkinsci/jenkins/pull/4546 for more background
• try to use ManagementLink.Category.SECURITY?

Should be a rather low-hanging fruit...