tag() improvement & heading functions

[brandonkelly]

Description

Improves the tag() function, making it possible to pass a string into its second argument, as a shortcut for the text attribute:

{{ tag('p', 'Hello') }}

And adds new heading functions:

{{ heading(2, 'Hello') }}
{{ h(2, 'Hello') }}

{{ h1('Hello') }}
{{ h2('Hello') }}
{{ h3('Hello') }}
{{ h4('Hello') }}
{{ h5('Hello') }}
{{ h6('Hello') }}

Like tag() now, either a string or attribute hash can be passed to the heading functions.

{{ heading(2, {
  text: 'Hello',
  class: 'component-title',
}) }}

Related issues

• Add a `heading()` Twig function #18518

[brandonkelly]

(We decided to drop the baseHeadingLevel concept for now – 188863002307b79a1f353609dbe32701a6e2dbef)