Add {% hubl %} tag

[johnsfuller]

Feature request

Just like shopify has a {% liquid %} tag (see liquid tag in their docs), it would be beneficial to have a block of hubl without delimeters on each tag.

Example

Before:

{% if foo == 'bar' %}
  {% set my_variable = 'xyz' %}
{% elif foo == 'baz' %}
  {% set my_variable = 'pdq' %}
{% else %}
  {% set my_variable = 'examine your zipper on channel 2' %}
{% endif %}

After:

{% hubl
  if foo == 'bar'
    set my_variable = 'xyz'
  elif foo == 'baz'
    set my_variable = 'pdq'
  else
    set my_variable = 'examine your zipper on channel 2'
  endif
%}

Why

Shopify recommends using their liquid tag if four or more consecutive Liquid tags ({% ... %}) are found. They've even commited to that rule in their official theme check – and I think for good reason. Modules can get complicated – even with standard hubl functions and our own custom macros. The delimiters get clunky quick and I think a lot of devs get worn out.

This was originally brought up in this slack idea.