chore: temporarily restore deleted files for CodeRabbit review

Restoring 27 deleted files and 26 trivially-changed request handlers
to bring the PR under CodeRabbit's 150-file review limit.
These will be re-deleted in the next commit.

packages/request-handler/src/dns-hole.ts

@@ -1,10 +1,12 @@
+import dayjs from "dayjs";
+
 import type { IntegrationKindByCategory } from "@homarr/definitions";
 import { createIntegrationAsync } from "@homarr/integrations";
 import type { DnsHoleSummary } from "@homarr/integrations/types";
 
-import { createIntegrationRequestHandler } from "./lib/integration-request-handler";
+import { createCachedIntegrationRequestHandler } from "./lib/cached-integration-request-handler";
 
-export const dnsHoleRequestHandler = createIntegrationRequestHandler<
+export const dnsHoleRequestHandler = createCachedIntegrationRequestHandler<
   DnsHoleSummary,
   IntegrationKindByCategory<"dnsHole">,
   Record<string, never>
@@ -13,4 +15,6 @@ export const dnsHoleRequestHandler = createIntegrationRequestHandler<
     const integrationInstance = await createIntegrationAsync(integration);
     return await integrationInstance.getSummaryAsync();
   },
+  cacheDuration: dayjs.duration(5, "seconds"),
+  queryKey: "dnsHoleSummary",
 });