Extract `changelog-check` to separate action

The `changelog-check` workflow helps us ensure that changelogs are updated alongside changes in polyrepos and monorepos.

Currently, when we make use of this workflow in other repos we need to pin to a specific commit ID. This is cumbersome because it means that if we want to make a change to the workflow we now need to go through each repo by hand and update the commit ID.

If we extracted this workflow to an action, we could start using version strings such as `v1`. As long as new changes were backward compatible they would automatically get propagated to all of the repos.

首先定位现有的 changelog-check workflow，并查看其他 repository 如何使用它。将其提取为带版本的 GitHub Action，更新使用模型以支持 v1-style 引用，并验证 changelog 检查在 polyrepo 和 monorepo 中仍然有效。

由索引模型根据 Issue 内容生成。