refactor: extract transaction creation and account syncing to actions

- Introduce CreateRecordTransactionsAction to handle transaction creation for any model
- Introduce SyncAccountsAction to encapsulate account synchronization logic
- Refactor CreateSaleAction to use new actions and handle full sale creation flow
- Simplify CreateExpense and CreateSale pages by delegating to actions
- Ensure proper transaction handling with database rollback on failure

app/Actions/Sales/SyncAccountsAction.php

@@ -0,0 +1,16 @@
+<?php
+
+namespace App\Actions\Sales;
+
+use App\Models\Sale;
+use Illuminate\Support\Facades\DB;
+
+class SyncAccountsAction 
+{
+    public function __invoke(Sale $sale, array $accounts): void
+    {
+        DB::transaction(function () use ($sale, $accounts) {
+            $sale->accounts()->sync($accounts);
+        }, attempts: 2);
+    }
+}