[Twig] Add `attributes()` twig function

[kbond]

Q	A
Bug fix?	no
New feature?	no
Issues	n/a
License	MIT

This allows passing attributes to elements easier.

<div{{ attributes({foo: 'bar'})>

When/if #1413 is merged, the following will also be possible:

<twig:Some:Component {{ ...attributes({foo: 'bar'}) }} />

[kbond]

Similar twig core issues/PRs: https://github.com/twigphp/Twig/pull/3930, https://github.com/twigphp/Twig/issues/3907, https://github.com/twigphp/Twig/pull/3760

[kbond]

The function name attributes is unfortunate as it can be confused with the attributes parameter in twig/live components:

<div{{ attributes }}> {# correct #}

<div{{ attributes() }}> {# wrong #}

html_attr() maybe?

[Kocal]

That's a great idea, it would also close #940 since the main idea was to easily renders attributes

[WebMamba]

The function name attributes is unfortunate as it can be confused with the attributes parameter in twig/live components:

Yes, I agree here. I like html_attr but also attr as it's proposed in the Twig issue.

How it's gonna work with Live components for example?

<div attributes({role: 'alert', class='text-blue-800 px-4',  ...attributes})>
...
</div>

[norkunas]

Would love to have this in Twig itself :)