Add plugin event `opened-notebook` & `closed-notebook`

[frostime]

In what scenarios do you need this feature?

插件需要根据笔记本打开、关闭来决定是否重新执行一些查询，已获得最新的状态。

Describe the optimal solution

• on-box-opened
  • {detail}: box id
  • when: 笔记本打开、并执行完重新索引之后
• on-box-closed
  • {detail}: box id
  • when: 笔记本关闭之后

Describe the candidate solution

No response

Other information

No response

[88250]

when: 笔记本打开、并执行完重新索引之后

索引是否完成需要通过调用接口 /api/sqlite/flushTransaction 后才能确定。

[88250]

另外，也可以参考这个 #8814 (comment)