Reusable ingress/egress rule templates for security groups

### The required feature described as a wish

Problem: There is currently no way to save or reuse common ingress/egress rule sets across security groups. Every new security group requires rules to be manually re-entered one by one through the UI

Requested behavior: allow users to define and save named rule templates. For instance "baseline-access", "web-server", "database", with options to define specific ports needed. When creating a new security group, allow selection of one or more templates to pre-populate rules

Cloudstack Verison 4.22.0.0

首先定位 security-group 创建的入口点，以及现有的 ingress/egress 规则模型和 API。跟踪规则的输入和持久化流程，然后确定覆盖 security-group 创建的测试；完成的标准是：能够保存命名模板，单独或组合选择这些模板，并使用它们预填充包含指定端口的规则。

由索引模型根据 Issue 内容生成。