LaTeX: add support for styling note (hint, ...) similarly as warning ( danger, ...)

[jfbu]

Subject: build on recent refactoring to add possibility to render note-type admonitions the same way as warning-type, i.e. use for them sphinxheavybox and have all the customizability via CSS-named alike options.

Feature or Bugfix

• Feature

Relates #11074 in so far as it is careful to keep working the possibility for user to do things such as

\renewenvironment{sphinxnote}[1]{\begin{sphinxheavybox}\sphinxstrong{#1} }{\end{sphinxheavybox}}

which was restored at #11081.

But it is not even needed to add such code to preamble now, as sphinxheavybox will be used automatically for note if one of the CSS-named alike options for it added by this PR is used, such as div.note_border-width.

Also using the new noteBgColor option (its CSS name alias is div.note_background-TeXcolor) to configure a background color, will automatically trigger usage of sphinxheavybox.

The above \renewenvironment by itself allowed only a very limited usage of sphinxheavybox, now the full range of its customizability is accessible.

[jfbu]

I will squash and merge after testing completes.

Refer then to https://www.sphinx-doc.org/en/master/latex.html#additional-css-like-sphinxsetup-keys for the documentation of the new features.