feat: support webpack 5

[sorrycc]

Checklist

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

Description of change

• Support webpack 5 via webpack5 config
• Support lazy compilation
• Support fs cache
• Add node polyfill with node-libs-browser

[codecov]

Codecov Report

Merging #6172 (47fcb3a) into master (6cd86cd) will decrease coverage by 0.50%.
The diff coverage is 37.14%.

@@            Coverage Diff             @@
##           master    #6172      +/-   ##
==========================================
- Coverage   85.71%   85.20%   -0.51%     
==========================================
  Files         151      152       +1     
  Lines        3394     3427      +33     
  Branches      912      923      +11     
==========================================
+ Hits         2909     2920      +11     
- Misses        475      497      +22     
  Partials       10       10              

Impacted Files	Coverage Δ
packages/preset-built-in/src/index.ts	100.00% <ø> (ø)
...s/preset-built-in/src/plugins/features/webpack5.ts	26.08% <26.08%> (ø)
...ackages/bundler-webpack/src/getConfig/getConfig.ts	84.81% <54.54%> (-2.36%)	⬇️
packages/bundler-webpack/src/index.ts	36.66% <100.00%> (ø)

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[LeoHuiyi]

@sorrycc 大佬 use @umijs/deps预编译后，webpack5能
这样引用吗？如果不能引用，要如何解决呢？

[sorrycc]

@LeoHuiyi 这个文档是不是过时了，没有 OverridablesPlugin 这个文件了，其他 container 下的可以通过 webpack.container.xxx 引用到，参考 https://unpkg.com/browse/[email protected]/lib/index.js 和 https://unpkg.com/browse/[email protected]/lib/container/

[sorrycc]

然后如果有没有被 webpack 导出但是需要引用的文件，也可以提 FEATURE，我们往 webpack 上加就好了。

[LeoHuiyi]

@sorrycc 明白，虽然这样 deps版本确定了，预编译 加载会更快。但是 很多包都改了源码，会有风险吗？基础库版本和社区同步会及时吗？感觉维护成本蛮大的。