feat: test integration connection (#669)

* feat: add test integration for pi-hole

* refactor: test integration for pi-hole

* fix: multiple secrets of same type could be used for integration creation

* fix: remove integration test connection test and add mock for test-connection function

* fix: add missing onUpdateFn to mysql integration secrets

* fix: format issues

* feat: add home assistant test connection

* fix: deepsource issues

* test: add system integration tests for test connection

* fix: add before all for pulling home assistant image

* test: add unit tests for handleTestConnectionResponseAsync

* test: add unit test for testConnectionAsync

* test: add mroe tests to integration-test-connection

* fix: deepsource issues

* fix: deepsource issue

* chore: address pull request feedback

packages/api/src/trpc.ts

@@ -10,6 +10,7 @@ import { initTRPC, TRPCError } from "@trpc/server";
 import superjson from "superjson";
 
 import type { Session } from "@homarr/auth";
+import { FlattenError } from "@homarr/common";
 import { db } from "@homarr/db";
 import type { GroupPermissionKey } from "@homarr/definitions";
 import { logger } from "@homarr/log";
@@ -52,6 +53,7 @@ const t = initTRPC.context<typeof createTRPCContext>().create({
     data: {
       ...shape.data,
       zodError: error.cause instanceof ZodError ? error.cause.flatten() : null,
+      error: error.cause instanceof FlattenError ? error.cause.flatten() : null,
     },
   }),
 });