Docs: migration from Hugo to Astro (#41251)

Co-authored-by: HiDeoo <494699+HiDeoo@users.noreply.github.com>
Co-authored-by: Mark Otto <markdotto@gmail.com>

.gitignore

@@ -1,8 +1,5 @@
 # Ignore docs files
 /_site/
-# Hugo files
-/resources/
-/.hugo_build.lock
 
 # Numerous always-ignore extensions
 *.diff
@@ -41,3 +38,9 @@ Thumbs.db
 /dist-sass/
 /js/coverage/
 /node_modules/
+
+# Site
+/site/dist
+/site/node_modules
+/site/.astro
+/site/public