feat(ls): New localstorage cleanup mechanism

[EYHN]

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Description

在 head.ejs 里添加 oldVersion 字段。
如果 localstorage 里存在这些字段将删除。

比如 1.4.0
会删除 localstorage 中存在 /*1.4.0*/ 的项目

fix: #377

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