Add scheduled tariff synchronization and bulk update functionality

- Introduced `runScheduledSyncTariffs` function to handle tariff synchronization independently from VPS and payment sync.
- Updated `syncFromBillmanager` to accept options for skipping tariff and VPS payment syncs.
- Added new database columns for `syncTariffsIntervalMinutes` and `customFields` in settings.
- Enhanced settings page to configure tariff sync interval.
- Implemented bulk update functionality for VPS status and deletion in the VPS management page.
- Updated various components to support new features, including sync log display and improved payment handling.

src/lib/api.js

@@ -128,6 +128,13 @@ export async function deleteRecord(collectionName, id) {
   return fetchCollection(collectionName)
 }
 
+export async function bulkUpdateVps(ids, action, value) {
+  return fetchApi('/api/vps/bulk', {
+    method: 'PATCH',
+    body: JSON.stringify({ ids, action, value }),
+  })
+}
+
 export async function syncAccount(accountId) {
   return fetchApi(`/api/sync/${encodeURIComponent(accountId)}`, { method: 'POST' })
 }
@@ -142,3 +149,7 @@ export async function testApiConnection(apiBaseUrl, apiCredentials) {
     body: JSON.stringify({ apiBaseUrl, apiCredentials }),
   })
 }
+
+export async function fetchSyncStatus() {
+  return fetchApi('/api/sync/status')
+}