Add support for custom alt text on card images to improve accessibility.
The alt parameter is optional and defaults to the card title if not provided,
maintaining backward compatibility with existing implementations.
Fixes#896
* feat: Remove the main sidebar entirely to free up more space for the main content of the page
* fix: ensure that the footer switches are still visible when the main sidebar has been disabled
* refactor: Repurpose Params.sidebar.hide to disable the main sidebar and disable the placeholder rather than adding a new front matter parameter
* fix: change wording from "disable" to "hide" in the documentation for hiding the sidebar
* fix: using incorrect hidden class in sidebar.html broke mobile navigation. Fixed this
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Co-authored-by: Xin <5097752+imfing@users.noreply.github.com>
* chore(docs): rename `exampleSite` to `docs` and create `examples`
* chore(build): update build script to support new version format and source directories; add v0.10 to documentation menu
