feat: support insert route

[ttys026]

feat: insert route

[codecov]

Codecov Report

Merging #698 (ce8f647) into master (5d78b57) will increase coverage by 0.67%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master     #698      +/-   ##
==========================================
+ Coverage   51.74%   52.42%   +0.67%     
==========================================
  Files          64       64              
  Lines        1546     1568      +22     
  Branches      403      425      +22     
==========================================
+ Hits          800      822      +22     
+ Misses        744      737       -7     
- Partials        2        9       +7     

Impacted Files	Coverage Δ
packages/plugin-qiankun/src/common.ts	67.27% <100.00%> (+21.81%)	⬆️
packages/plugin-locale/src/index.ts	82.43% <0.00%> (ø)
packages/plugin-ant-design-pro-block/src/index.ts	0.00% <0.00%> (ø)
packages/plugin-qiankun/src/master/modifyRoutes.ts	0.00% <0.00%> (ø)

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[kuitos]

路由插入场景还需要做一下前置检查，必须符合这个条件，即 route 自身的 path 必须是 target 对应的 path 的子路由，不然直接 throw error，如

// 这里的 target path 必须是 /user 或者 /，如果是 /abc 这种直接抛异常，因为 /user/test 无法成为 /abc 的子路由
{ path: '/user/test', microApp: 'abc', target: '/user' }

[kuitos]

LGTM