feat: renamed old frontend and fixed some minor bugs

frontend/src/pages/organization/CertManagerOverviewPage/route.tsx

@@ -0,0 +1,9 @@
+import { createFileRoute } from "@tanstack/react-router";
+
+import { CertManagerOverviewPage } from "./CertManagerOverviewPage";
+
+export const Route = createFileRoute(
+  "/_authenticate/_inject-org-details/organization/_layout/cert-manager/overview"
+)({
+  component: CertManagerOverviewPage
+});