docs: use pkgdown BS5

[maelle]

Fix #31

• BS5
• low-hanging fruits: adding authors' URLs
• ignoring docs/
• making the duckdb-package manual page internal, as it brings nothing to the reference index.

I need to build the website locally to check things, then this will be ready for review.

[maelle]

This looks mostly good, apart from the giant logo. @krlmlr would it be worth for me to explore how to make the logo a PNG so it's not as huge in the pkgdown website?

[krlmlr]

Please do. Thanks!

[krlmlr]

Add https://krlmlr.info/ for myself too?

[maelle]

You are not listed as an author (yet?)!

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (c3184e8) 85.95% compared to head (84b7f52) 85.89%.

❗ Current head 84b7f52 differs from pull request most recent head 12af9c3. Consider uploading reports for the commit 12af9c3 to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #70      +/-   ##
==========================================
- Coverage   85.95%   85.89%   -0.06%     
==========================================
  Files         106      106              
  Lines        3602     3602              
==========================================
- Hits         3096     3094       -2     
- Misses        506      508       +2     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[maelle]

So nice that there's a FAQ item on the logo http://duckdb.org/faq#where-do-i-find-the-duckdb-logo 👌

For the favicons, the logo itself would look bad so I'm using the favicon files from https://github.com/duckdb/duckdb-web/tree/main/images/favicon

[maelle]

[maelle]

@krlmlr I ran document() to make the logo appear on the package-level manual page, which is how I realized it was created manually and with the deprecated docType, so I updated that as well. Created this way, the package-level manual page is itnernal so pkgdown won't add it in the index. This PR is now really ready.

[krlmlr]

Thanks!