feat: added printing module

printing/admin.py

@@ -0,0 +1,26 @@
+from django.contrib import admin
+from . import models
+
+
+class PrintingJobInline(admin.StackedInline):
+    model = models.PrintingJob
+    extra = 1
+
+
+@admin.register(models.PrintingOrder)
+class PrintingOrderAdmin(admin.ModelAdmin):
+    list_display = (
+        'oid', 
+        'customer_name', 
+        'created_at', 
+        'outgoing_date',
+    )
+    inlines = [PrintingJobInline]
+
+    @admin.display(description='客户名称')
+    def customer_name(self, obj: models.PrintingOrder):
+        return obj.customer.name
+
+    @admin.display(description='订单编号(虚拟)')
+    def oid(self, obj: models.PrintingOrder):
+        return obj.human_id