feat(orders): add recipient management and enhance order forms

- Introduced Recipient model to manage order recipients separately from customers.
- Updated Order model to link to Recipient, replacing recipient_name and recipient_phone fields.
- Enhanced OrderForm to include recipient selection modes: customer, history, and new.
- Added AJAX endpoint to fetch recipient history for customers.
- Updated admin interface to manage recipients and display recipient information in order details.
- Refactored address handling to accommodate new recipient logic.
- Improved demo order creation to include random recipients.

myproject/orders/admin.py

@@ -1,7 +1,7 @@
 # -*- coding: utf-8 -*-
 from django.contrib import admin
 from django.utils.html import format_html
-from .models import Order, OrderItem, Transaction, PaymentMethod, Address, OrderStatus
+from .models import Order, OrderItem, Transaction, PaymentMethod, Address, OrderStatus, Recipient
 
 
 class TransactionInline(admin.TabularInline):
@@ -61,7 +61,7 @@ class OrderAdmin(admin.ModelAdmin):
         'customer__name',
         'customer__phone',
         'customer__email',
-        'delivery_address__recipient_name',
+        'recipient__name',
         'delivery_address__street',
     ]
 
@@ -240,8 +240,6 @@ class AddressAdmin(admin.ModelAdmin):
     Админ-панель для управления адресами доставки заказов.
     """
     list_display = [
-        'recipient_name',
-        'recipient_phone',
         'full_address',
         'entrance',
         'floor',
@@ -255,7 +253,6 @@ class AddressAdmin(admin.ModelAdmin):
     ]
 
     search_fields = [
-        'recipient_name',
         'street',
         'building_number',
     ]
@@ -263,9 +260,6 @@ class AddressAdmin(admin.ModelAdmin):
     readonly_fields = ['created_at', 'updated_at']
 
     fieldsets = (
-        ('Информация о получателе', {
-            'fields': ('recipient_name', 'recipient_phone')
-        }),
         ('Адрес доставки', {
             'fields': ('street', 'building_number', 'apartment_number', 'entrance', 'floor')
         }),
@@ -284,6 +278,39 @@ class AddressAdmin(admin.ModelAdmin):
     )
 
 
+@admin.register(Recipient)
+class RecipientAdmin(admin.ModelAdmin):
+    """
+    Админ-панель для управления получателями заказов.
+    """
+    list_display = [
+        'name',
+        'phone',
+        'created_at',
+    ]
+
+    list_filter = [
+        'created_at',
+    ]
+
+    search_fields = [
+        'name',
+        'phone',
+    ]
+
+    readonly_fields = ['created_at', 'updated_at']
+
+    fieldsets = (
+        ('Информация о получателе', {
+            'fields': ('name', 'phone')
+        }),
+        ('Даты', {
+            'fields': ('created_at', 'updated_at'),
+            'classes': ('collapse',)
+        }),
+    )
+
+
 @admin.register(OrderStatus)
 class OrderStatusAdmin(admin.ModelAdmin):
     """