chore(boilerplate): fix building issue cause of .tsbuildinfo

[waitingsong]

It will no output during tsc incremental build if outDir is empty and .tsbuildinfo exists.
Add scripts npm run clean to unlink files in outDir and file .tsbuildinfo .

Checklist

• npm test passes
• tests and/or benchmarks are included
• documentation is changed or added
• commit message follows commit guidelines

Affected core subsystem(s)

Description of change

启用 tsc 的 incremental 编译参数后，若 删除了 ourDir 下的编译输出文件，则下次编译就不会有输出。需要删除掉 .tsbuildinfo 文件后才正常。
所以增加一条清除的脚本命令 npm run clean 用于删除编辑结果文件以及相关 .tsbuildinfo 文件。

[codecov-io]

Codecov Report

Merging #298 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #298   +/-   ##
=======================================
  Coverage   86.61%   86.61%           
=======================================
  Files          35       35           
  Lines         695      695           
  Branches       48       48           
=======================================
  Hits          602      602           
  Misses         83       83           
  Partials       10       10

---

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[waitingsong]

dev 依赖中增加一个 rimraf。不知道 midway 是否有内置的删除命令。

[czy88840616]

https://midwayjs.org/midway/tool_set.html#clean-%E5%91%BD%E4%BB%A4

[waitingsong]

midway-bin-clean 匹配规则是否支持通配 比如 .vscode/.tsbuildinfo.* .
如果可行，我再修改下，尽量少依赖。

[waitingsong]

另外，是否支持在script中调用？
scripts: {
"clean": "midway-bin clean"
}

然后在命令行执行 npm run clean 。

[czy88840616]

命令行调用当然支持，通配的话，看了一下貌似不支持，不过build的时候拷贝是支持的，可以抄一下。。