feat: 工单多级审批 + 模版创建 (#6640)

* feat: 工单多级审批 + 模版创建

* feat: 工单权限处理

* fix: 工单关闭后 再审批bug

* perf: 修改一点

Co-authored-by: feng626 <1304903146@qq.com>
Co-authored-by: ibuler <ibuler@qq.com>

apps/tickets/permissions/ticket.py

@@ -1,4 +1,3 @@
-
 from rest_framework import permissions
 
 
@@ -7,12 +6,7 @@ class IsAssignee(permissions.BasePermission):
         return obj.has_assignee(request.user)
 
 
-class IsAssigneeOrApplicant(IsAssignee):
+class IsApplicant(permissions.BasePermission):
 
     def has_object_permission(self, request, view, obj):
-        return super().has_object_permission(request, view, obj) or obj.applicant == request.user
-
-
-class NotClosed(permissions.BasePermission):
-    def has_object_permission(self, request, view, obj):
-        return not obj.status_closed
+        return obj.applicant == request.user