feat: Added StayType management with CRUD operations and DataTables integration

Modules/CostCalculator/app/Services/StayTypeService.php

@@ -0,0 +1,49 @@
+<?php
+
+namespace Modules\CostCalculator\Services;
+
+use Illuminate\Support\Facades\DB;
+use Modules\CostCalculator\Models\StayType;
+
+class StayTypeService
+{
+
+    public function getAllCategories()
+    {
+        $query = StayType::query();
+        return $query->get();
+    }
+
+    public function storeStayType(array $partnerData): StayType
+    {
+        return DB::transaction(function () use ($partnerData) {
+            $partner = StayType::create($partnerData);
+
+            return $partner;
+        });
+    }
+
+    public function getStayTypeById(int $id)
+    {
+        return StayType::findOrFail($id);
+    }
+
+    public function updateStayType(int $id, array $partnerData)
+    {
+        $partner = $this->getStayTypeById($id);
+
+        return DB::transaction(function () use ($partner, $partnerData) {
+            $partner->update($partnerData);
+            return $partner;
+        });
+    }
+
+    public function deleteStayType(int $id)
+    {
+        return DB::transaction(function () use ($id) {
+            $partner = $this->getStayTypeById($id);
+            $partner->delete();
+            return true;
+        });
+    }
+}