chore: improve create-umi

[fz6m]

1. 优化 create umi 界面。

2. plugin 模板修正后也放出来，可以创建了。

[vercel]

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Name	Status	Preview	Comments	Updated
umi	✅ Ready (Inspect)	Visit Preview	💬 Add your feedback	Feb 14, 2023 at 9:29PM (UTC)

[sorrycc]

ci 还有点问题。

[codecov]

Codecov Report

Base: 29.47% // Head: 29.49% // Increases project coverage by +0.01% 🎉

Coverage data is based on head (ccfd4f0) compared to base (e024b93).
Patch coverage: 66.17% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff             @@
##           master   #10508      +/-   ##
==========================================
+ Coverage   29.47%   29.49%   +0.01%     
==========================================
  Files         447      447              
  Lines       13104    13141      +37     
  Branches     3086     3098      +12     
==========================================
+ Hits         3863     3876      +13     
- Misses       8595     8612      +17     
- Partials      646      653       +7     

Impacted Files	Coverage Δ
packages/create-umi/src/index.ts	60.00% <58.92%> (-14.03%)	⬇️
packages/utils/src/BaseGenerator/BaseGenerator.ts	100.00% <100.00%> (ø)
packages/utils/src/Generator/Generator.ts	88.09% <100.00%> (+0.91%)	⬆️
packages/utils/src/index.ts	100.00% <100.00%> (ø)

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