[Experimental] Try out Astro docs deployment

[julien-deramond]

Description

This experimental PR gathers the gh-pages possible deployment of Astro docs migration PR.

First of all, the generated website is created by running npm run astro-build from #41251 (done on the 8th of March). It created a _site directory like it's already the case in our main branch.

Then, likely how we're already doing the gh-pages update:

npm run astro-build
mv \_site /tmp/
git checkout gh-pages
git checkout -b gh-pages-jd-docs-astro

mv /tmp/_site/404.html .
mv /tmp/_site/CNAME .
mv /tmp/_site/apple-touch-icon.png .
mv /tmp/_site/favicon.ico .
mv /tmp/_site/index.html .
mv /tmp/_site/robots.txt .
mv /tmp/_site/sitemap-0.xml .
mv /tmp/_site/sitemap-index.xml .
mv /tmp/_site/sw.js .
mv /tmp/_site/_astro .
rm -rf about ; mv /tmp/_site/about .
rm -rf components ; mv /tmp/_site/components .
rm -rf docsref ; mv /tmp/_site/docsref .
rm -rf examples ; mv /tmp/_site/examples .
rm -rf getting-started ; mv /tmp/_site/getting-started .
rm -rf migration ; mv /tmp/_site/migration .
rm -rf docs/getting-started ; mv /tmp/_site/docs/getting-started docs/
rm -rf docs/versions ; mv /tmp/_site/docs/versions docs/
mv /tmp/_site/docs/index.html docs/index.html
rm -rf docs/5.3 ; mv /tmp/_site/docs/5.3 docs/

Then, you can checkout this branch locally and run http-serve for instance.

Impacts analysis

• mv /tmp/_site/docs/5.3 docs/ copy a useless site directory that shouldn't be there (see 3cb7611)