Provides a render element for any HTML tag, with properties and value.
Properties:
#tag: The tag name to output.
#attributes: (array, optional) HTML attributes to apply to the tag. The attributes are escaped, see \Drupal\Core\Template\Attribute.
#value: (string, optional) A string containing the textual contents of the tag.
#noscript: (bool, optional) When set to TRUE, the markup (including any prefix or suffix) will be wrapped in a <noscript> element.
Usage example:
$build['hello']