feat: getClashNodeNames 增加默认节点

[GodD6366]

- name: Test
  type: select
  proxies: {{ getClashNodeNames(
         nodeList, 
         customFilters.Test, 
         [ ], 
         [ '🚀 Proxy' ]
    ) | json }}

我期望 getClashNodeNames 达到的效果如下：

• 查询到节点时，使用查询到的节点
• 没有查询到节点时，使用默认配置的 🚀 Proxy 节点

现有的 prependNodeNames 不管是否查询到，都会追加到最前面，不太符合要求

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[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Comparison is base (df33a80) 76.67% compared to head (5336634) 76.69%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #251 +/- ## ========================================== + Coverage 76.67% 76.69% +0.02% ========================================== Files 62 62 Lines 2319 2321 +2 Branches 575 576 +1 ========================================== + Hits 1778 1780 +2 Misses 355 355 Partials 186 186 ```

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[geekdada]

感谢贡献代码，能不能顺便增加一下文档

[GodD6366]

感谢贡献代码，能不能顺便增加一下文档

done