Improve gh pages and rendering of Vignettes

[nikosbosse]

This PR

• gets rid of the preferably package in _pkgdown.yml which had a light/dark theme toggle that didn't work properly
• updates the gh pages deploy action to v4 and also cleans up files when triggered
• introduces a gh action to automatically render the Readme from Readme.Rmd
• removes links to vignettes that have been renamed
  Thanks to @sbfnk who did most of the changes

[codecov]

Codecov Report

Merging #316 (f6254c5) into main (20f459c) will not change coverage.
The diff coverage is n/a.

❗ Current head f6254c5 differs from pull request most recent head 8605b17. Consider uploading reports for the commit 8605b17 to get more accurate results

@@           Coverage Diff           @@
##             main     #316   +/-   ##
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  Coverage   90.87%   90.87%           
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  Files          22       22           
  Lines        1392     1392           
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  Hits         1265     1265           
  Misses        127      127           

Files Changed	Coverage Δ
R/score.R	100.00% <ø> (ø)

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[seabbs]

Will circle back soon but just wanted to note if we are improving gh-pages we should move to an action that deploys an environment and tune when it triggers a bit more (so that it only runs on main and for PRs on main but doesn't deploy).

• rather than getting rid of preferably you could just turn off the switch because I think that is what is causing you issues.

[seabbs]

Does what it says on the tin.

See comments above about alternatives with preferably and a better way to deploy the docs.

[nikosbosse]

Deploying failed unfortunately.

I also created a new issue #317 as Sam suggested