Report output files info on build

[stone-zeng]

It will be useful to report output files info on vitepress build, just like vite and vite-ssg:

dist/manifest.webmanifest                          0.39 kB
dist/index.html                                    0.95 kB
dist/ssr-manifest.json                             6.30 kB
dist/assets/index-89f3251e.css                    18.24 kB │ gzip:  4.79 kB
dist/assets/_...all_-e8601cfa.js                   0.31 kB │ gzip:  0.25 kB
dist/assets/home-65b0b4e6.js                       0.45 kB │ gzip:  0.33 kB
dist/assets/404-8ded25dc.js                        0.57 kB │ gzip:  0.41 kB
dist/assets/virtual_pwa-register-4d697ac4.js       0.63 kB │ gzip:  0.42 kB
dist/assets/_name_-b57f502b.js                     1.10 kB │ gzip:  0.66 kB
dist/assets/README-ffd724b2.js                     3.95 kB │ gzip:  0.89 kB
dist/assets/about-226cbe19.js                      4.21 kB │ gzip:  1.16 kB
dist/assets/workbox-window.prod.es5-295a6886.js    5.30 kB │ gzip:  2.20 kB
dist/assets/app-9ca3a6e0.js                      255.86 kB │ gzip: 89.20 kB

[vite-ssg] Build for server...
vite v4.0.0 building SSR bundle for production...
✓ 54 modules transformed.
.vite-ssg-temp/manifest.webmanifest                          0.39 kB
.vite-ssg-temp/assets/style-9f51da2c.css                    22.97 kB
.vite-ssg-temp/assets/virtual_pwa-register-56f57011.js       1.20 kB
.vite-ssg-temp/assets/_...all_-54e330b1.js                   1.23 kB
.vite-ssg-temp/assets/_name_-415affd6.js                     2.72 kB
.vite-ssg-temp/assets/README-750fdd6c.js                     6.02 kB
.vite-ssg-temp/assets/about-7bcbc684.js                      6.25 kB
.vite-ssg-temp/assets/workbox-window.prod.es5-6a9d82f3.js    7.61 kB
.vite-ssg-temp/main.mjs                                    112.10 kB

[vite-ssg] Rendering Pages... (4)
[vite-ssg] Critical CSS generation enabled via `critters`
dist/index.html       10.16 KiB
dist/.html            10.16 KiB
dist/readme.html      13.55 KiB
dist/about.html       13.55 KiB

For a typical blog/website, however, there may be too many pages and assets. So we can provide a short statistic as well, like hugo:

                   |  EN   
-------------------+-------
  Pages            |  992  
  Paginator pages  |    8  
  Non-page files   | 1279  
  Static files     |   73  
  Processed images |    0  
  Aliases          |    1  
  Sitemaps         |    1  
  Cleaned          |    0