Dev API에 RP operator relation 조회/부여/회수 추가

devfront/src/features/clients/ClientGeneralPage.tsx

@@ -680,6 +680,12 @@ function ClientGeneralPage() {
               >
                 {t("ui.dev.clients.details.tab.consents", "Consent & Users")}
               </Link>
+              <Link
+                to={`/clients/${clientId}/relationships`}
+                className="whitespace-nowrap border-b-2 border-transparent text-muted-foreground hover:text-foreground"
+              >
+                {t("ui.dev.clients.details.tab.relationships", "Relationships")}
+              </Link>
               <span className="whitespace-nowrap border-b-2 border-primary pb-1 text-primary">
                 {t("ui.dev.clients.details.tab.settings", "Settings")}
               </span>