✨ Add possibility to define users as admin

public/locales/en/manage/users.json

@@ -14,6 +14,17 @@
         "delete": {
             "title": "Delete user {{name}}",
             "text": "Are you sure, that you want to delete the user {{name}}? This will delete data associated with this account, but not any created dashboards by this user."
+        },
+        "change-role": {
+            "promote": {
+                "title": "Promote user {{name}} to admin",
+                "text": "Are you sure, that you want to promote the user {{name}} to admin? This will give the user access to all resources on your Homarr instance."
+            },
+            "demote": {
+                "title": "Demote user {{name}} to user",
+                "text": "Are you sure, that you want to demote the user {{name}} to user? This will remove the user's access to all resources on your Homarr instance."
+            },
+            "confirm": "Confirm"
         }
     },
     "searchDoesntMatch": "Your search does not match any entries. Please adjust your filter."