feat: add multi-domain filters to webhooks (#361)

* feat(webhooks): add multi-domain endpoint filtering

* test(webhooks): add domain filter router coverage

* fix(webhooks): apply domain filters only to domain-scoped events

* stuff

* stuff

apps/web/prisma/migrations/20260227040924_add_webhook_domain_filters/migration.sql

@@ -0,0 +1,2 @@
+-- AlterTable
+ALTER TABLE "Webhook" ADD COLUMN     "domainIds" INTEGER[] DEFAULT ARRAY[]::INTEGER[];

apps/web/prisma/schema.prisma

@@ -469,6 +469,7 @@ enum WebhookCallStatus {
 model Webhook {
   id                  String        @id @default(cuid())
   teamId              Int
+  domainIds           Int[]         @default([])
   url                 String
   description         String?
   secret              String