feat: add product activation/deactivation and filtering by active status

- Add 'active' boolean field to Product model with default=True
- Implement ProductView.get_queryset() to filter products by active status
  - Default behavior: return only active products
  - Support query params: ?active=true|false|all
  - Support variations: 1/0, yes/no for true/false
  - Detail operations (GET/PATCH/DELETE by ID) work with all products
- Update ProductSerializer to include 'active' field
- Add comprehensive test suite (11 new tests):
  - Test filtering by active/inactive/all products
  - Test parameter variations (1, yes, 0, no)
  - Test PATCH to activate/deactivate products
  - Test default list behavior after status changes
- Update API documentation in doc/requests.org with examples
- All tests passing (13 product tests + 8 API tests)

doc/requests.org

@@ -14,8 +14,8 @@ post /token/
 **** respuesta
 #+begin_src json
 {
-  "refresh": "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJ0b2tlbl90eXBlIjoicmVmcmVzaCIsImV4cCI6MTc4MDEwMzY0NiwiaWF0IjoxNzgwMDE3MjQ2LCJqdGkiOiI1NDk2NmQ0YTFmMGE0OWNjOGU5MGY5MmZmMTE0ZTMwZCIsInVzZXJfaWQiOiIxIn0.uWIe0Xm9i9eI4fFaM3Ha3FrIaQLfwvpHwbJue3OvhTo",
-  "access": "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJ0b2tlbl90eXBlIjoiYWNjZXNzIiwiZXhwIjoxNzgwMDE5MDQ2LCJpYXQiOjE3ODAwMTcyNDYsImp0aSI6IjQzYmYzOGM0ZWY3MTQ1YTk5ZjliMTQzODMyYjEwZmVkIiwidXNlcl9pZCI6IjEifQ.LMxWs0bHejpgcZvCpMCqfe5ue3YxAaWUweWHHoHhoH0"
+  "refresh": "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJ0b2tlbl90eXBlIjoicmVmcmVzaCIsImV4cCI6MTc4MDExNTc0NywiaWF0IjoxNzgwMDI5MzQ3LCJqdGkiOiIxNmVjZGMxZmY4Y2Y0MzA4ODM3ZjM5Y2ZiNjQwNmZiMCIsInVzZXJfaWQiOiIxIn0.wmN-wp3Izv0NrfL_ap_i8eyg29w-foHNrQCCL6HoZWg",
+  "access": "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJ0b2tlbl90eXBlIjoiYWNjZXNzIiwiZXhwIjoxNzgwMDMxMTQ3LCJpYXQiOjE3ODAwMjkzNDcsImp0aSI6ImQ4ZjE1YTRmODc5NzRjZGViZDEzYzc1ZTU4ZDk3ZjEwIiwidXNlcl9pZCI6IjEifQ.kkQVT2pcYeS_TxlJ6QPU3rNOlZhOv96pyqVEGJI85KA"
 }
 #+end_src
 *** Perfil de usuario
@@ -47,7 +47,7 @@ post /token/refresh/
 ** Don confiao :verb:
 template http://localhost:7000/don_confiao/api/
 Content-Type: application/json;
-Authorization: Bearer eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJ0b2tlbl90eXBlIjoiYWNjZXNzIiwiZXhwIjoxNzgwMDE5MDQ2LCJpYXQiOjE3ODAwMTcyNDYsImp0aSI6IjQzYmYzOGM0ZWY3MTQ1YTk5ZjliMTQzODMyYjEwZmVkIiwidXNlcl9pZCI6IjEifQ.LMxWs0bHejpgcZvCpMCqfe5ue3YxAaWUweWHHoHhoH0
+Authorization: Bearer eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJ0b2tlbl90eXBlIjoiYWNjZXNzIiwiZXhwIjoxNzgwMDMxMTQ3LCJpYXQiOjE3ODAwMjkzNDcsImp0aSI6ImQ4ZjE1YTRmODc5NzRjZGViZDEzYzc1ZTU4ZDk3ZjEwIiwidXNlcl9pZCI6IjEifQ.kkQVT2pcYeS_TxlJ6QPU3rNOlZhOv96pyqVEGJI85KA
 *** todas las rutas
 get
 **** response
@@ -79,6 +79,22 @@ get customers/
 *** products
 get products/
 
+*** Productos Inactivos
+get products/?active=false
+
+*** Productos Activos
+get products/?active=true
+
+*** Traer todos los productos
+get products/?active=all
+
+*** Inactiva productos
+patch products/1
+
+{
+        "active": false
+}
+
 *** Obtener Ventas por catalogo
 get catalog_sales/