Add a Home link to the doc root

[kwankyu]

Part of #33833.

See the Home link in the sidebar on the left:

https://c99c2801a6174e5c8ac573ca5d53d98dc914f4d8--sagemath-tobias.netlify.app/tutorial/index.html

and

https://c99c2801a6174e5c8ac573ca5d53d98dc914f4d8--sagemath-tobias.netlify.app/tutorial/tour_algebra.html

and compare with previous

https://73e5aa3fbbec2d751a47064c14479fc0d55c3de9--sagemath-tobias.netlify.app/tutorial/index.html

Depends on #34252

Component: documentation

Author: Kwankyu Lee

Branch/Commit: c99c280

Reviewer: Matthias Koeppe

Issue created by migration from https://trac.sagemath.org/ticket/34267

[kwankyu]

Branch: u/klee/add_a_home_link_to_the_doc_root

[kwankyu]

Commit: c99c280

[kwankyu]

Dependencies: #34252

[kwankyu]

Last 10 new commits:

f19b597	Add link to the logo
09d5f5c	Fix the logo link for reference
ae75d53	Fix a subtle reference problem for build_options
3519bed	Run docbuild workflow with single thread
1274718	Fix a suspicious part of categories doc
e5b1f7e	Add search.html
ebd3b77	Better pygments style
73e5aa3	Make white logo transparent to match with furo
183e558	Merge branch 'develop' into t/34252/revive-furo
c99c280	Add a Home link to the doc root

[kwankyu]

Author: Kwankyu Lee

[kwankyu]

comment:4

See the Home link in the sidebar on the left:

https://c99c2801a6174e5c8ac573ca5d53d98dc914f4d8--sagemath-tobias.netlify.app/tutorial/index.html

and compare with previous

https://73e5aa3fbbec2d751a47064c14479fc0d55c3de9--sagemath-tobias.netlify.app/tutorial/index.html

[mkoeppe]

Reviewer: Matthias Koeppe

[vbraun]

Changed branch from u/klee/add_a_home_link_to_the_doc_root to c99c280