In Antora 3, the model is `page.component.latest`. It was previously `page.component.latestVersion`
The hbs templates have been updated but the source preview model still refers to the old property.
So the links to the latest version in preview pages weren't resolved.

When we copied the source example, it was not accurate and we didn't reproduce the right behavior.

* theme: improve video block

Inspired from https://gitlab.com/antora/antora-ui-default/-/commit/b037733f5909eb6b1c9ab5b3358219006650ad94

* theme: smooth scroll behavior

Previously generated error like: `Uncaught TypeError: document.getElementById(...) is null`

This is because the toggle id is not the same on mobile and desktop, and we only have a single element on each device.

Also remove the build-artifacts.yml workflow
- we never download the preview which is now available on GitHub Pages
- we never download the ui-bundle and we are reworking the way it will be integrated in the documentation site repository

* On master push, build preview zip, set url with gh pages url and deploy this zip

Contains tricks in the gulp build
- change the site url with an environment variable. We can parametrize the site url for PR preview (and later live preview of the master branch of this repository). Previously, it was always set to http://localhost:5252/


- ensure that the navigation is always opened to currently displayed page
Co-authored-by: Benjamin Parisel <benjamin.parisel@bonitasoft.com>
Co-authored-by: Jerome Cambon <jerome.p.cambon@gmail.com>

We try to hide the build internals so use the same commands as described in the README file.
Also trigger the workflow run on package.json change, otherwise, npm script changes won't be tested.

* fix: don't underline link in breadcrumbs

In a previous change, we made the links in the toolbar message blocks more visible by underlining them. This introduced
a side effect on the links of the breadcrumbs that were also underlined.
This is now fixed and dedicated pages have been created to easily test the rendering of all kinds of messages.

In addition, refactor the CSS classes of the message blocks
- remove duplication
- apply underline to anchor inside the message blocks, not in the other toolbar elements
- introduce a dedicated css class for custom message block for clarity (even if the definition is the same as the one
for next version block)

* Adding template to create a troubleshooting section

allow using collapsible blocks in the preview source content

- "custom message" is now better presented on 2 lines
- "out of support" message has now links more visible (underlined)

* Fix side effect of "custom message always visible"

This is not required to install `gulp` globally. Using `npm` commands will use the local `gulp` version and make the usage easier for developers.

* Custom messages are now always visible.

Covers https://github.com/bonitasoft/bonita-documentation-site/issues/274

Co-authored-by: Adrien <adrien.lachambre@bonitasoft.com>

Co-authored-by: benjaminParisel <benjamin.parisel@bonitasoft.com>

Cherrypicks commit: from antora-ui-default branch
1a66a0d7
61185add
f004b4d8
915a98a
6e5903c8
2c0ba246
731012b0
176c0132 
33979e27
eabf2d09

This avoids loading useless resources when the search is not available in the
page. It previously generated a JS error because some HTML element was not
present in the page.

Also use specific version of docsearch resources to improve caching and use SRI.

Bumps [nanoid](ai/nanoid) from 3.1.28 to 3.2.0.
- [Release notes](ai/nanoid/releases)
- [Changelog](ai/nanoid@main/CHANGELOG.md)
- [Commits](ai/nanoid@3.1.28...3.2.0)

---
updated-dependencies:
- dependency-name: nanoid
  dependency-type: indirect
...
Signed-off-by: dependabot[bot] <support@github.com>

Sub-folders were taken into account.

We do not increase the font weight on hover (in the nav, the toc...) -> no more 'flash' effect
Add a dedicated color for hover, so the contrats is better on light theme

We are only checking the PR title and description so we don't need to checkout (we are not considering the repository code here).