refactor: Webhooks (#12487)

Closes #12303

### What’s Changed
- Replace auto‐save with explicit Save / Cancel
Webhook forms now use manual “Save” and “Cancel” buttons instead of the
old debounced auto‐save/update.

- Separate “New” and “Detail” routes
Two dedicated paths `/settings/webhooks/new` for creation and
/`settings/webhooks/:webhookId` for editing, making the UX clearer.

- URL hint & normalization
If a user omits the http(s):// scheme, we display a “Will be saved as
https://…” hint and automatically default to HTTPS.

- Centralized validation with Zod
Introduced a `webhookFormSchema` for client‐side URL, operations, and
secret validation.

- Storybook coverage
Added stories for both “New Webhook” and “Webhook Detail”

- Unit tests
Added tests for the new `useWebhookForm` hook

packages/twenty-server/src/modules/webhook/query-hooks/webhook-query-hook.module.ts

@@ -0,0 +1,18 @@
+import { Module } from '@nestjs/common';
+
+import { WebhookCreateManyPreQueryHook } from 'src/modules/webhook/query-hooks/webhook-create-many.pre-query.hook';
+import { WebhookCreateOnePreQueryHook } from 'src/modules/webhook/query-hooks/webhook-create-one.pre-query.hook';
+import { WebhookUpdateManyPreQueryHook } from 'src/modules/webhook/query-hooks/webhook-update-many.pre-query.hook';
+import { WebhookUpdateOnePreQueryHook } from 'src/modules/webhook/query-hooks/webhook-update-one.pre-query.hook';
+import { WebhookUrlValidationService } from 'src/modules/webhook/query-hooks/webhook-url-validation.service';
+
+@Module({
+  providers: [
+    WebhookUrlValidationService,
+    WebhookCreateOnePreQueryHook,
+    WebhookCreateManyPreQueryHook,
+    WebhookUpdateOnePreQueryHook,
+    WebhookUpdateManyPreQueryHook,
+  ],
+})
+export class WebhookQueryHookModule {}