feat: products 및 materials 테이블에 is_active 컬럼 추가

- is_active 컬럼 추가 마이그레이션 (default 1)
- Product 모델 fillable 및 casts 업데이트
- Material 모델 fillable 및 casts 업데이트
- Material 모델에 material_type fillable 추가
- ModelTrait의 scopeActive() 메서드 지원

app/Models/Products/Product.php

@@ -28,7 +28,7 @@ class Product extends Model
         'specification_file', 'specification_file_name',
         'certification_file', 'certification_file_name',
         'certification_number', 'certification_start_date', 'certification_end_date',
-        'created_by', 'updated_by',
+        'created_by', 'updated_by', 'is_active',
     ];
 
     protected $casts = [
@@ -41,6 +41,7 @@ class Product extends Model
         'is_purchasable' => 'boolean',
         'is_producible' => 'boolean',
         'is_variable_size' => 'boolean',
+        'is_active' => 'boolean',
     ];
 
     protected $hidden = [