docs(planning#80): Add a navbar dropdown with links to the different SSP envs

docusaurus.config.js

@@ -38,6 +38,31 @@ module.exports = {
       items: [
         {to: '/docs', label: 'Dokumentation', position: 'left'},
         {to: '/news', label: 'News', position: 'left'},
+        {
+          type: 'dropdown',
+          position: 'right',
+          label: 'Self-Service-Portal',
+          items: [
+            /*
+            {
+              label: 'Produktion',
+              href: 'https://portal.auth-prod.fit-connect.fitko.net/'
+            },
+            {
+              label: 'Referenz-Umgebung',
+              href: 'https://portal.auth-refz.fit-connect.fitko.net/'
+            },
+             */
+            {
+              label: 'Test',
+              href: 'https://portal.auth-testing.fit-connect.fitko.dev/'
+            },
+            {
+              label: 'Entwicklung',
+              href: 'https://portal.auth-dev.fit-connect.fitko.dev/'
+            },
+          ],
+        }
       ],
     },
     footer: {