Expose Liquid::Condition in public API

It would be useful to be able to use Liquid conditions outside of templating. This can be hacked by using private APIs like so:

cond = Liquid::If
  .send(
    :new,
    'if',
    condition_str,
    parse_context
  )
  .blocks
  .first or raise
cond.evaluate(context)

...or by abusing templating like so:

tmpl = Liquid::Template.parse(
  "{% if #{condition} %}true{% else %}false{% endif %}",
  parse_context
)
tmpl.render(context) == "true"

The former is hacky and prone to breakage in future releases, the latter is inefficient and has quoting issues. Would it be conceivable to expose this feature in the public API?

Start by tracing Liquid::If and its private construction path, then compare it with the Liquid::Template.parse and render workaround shown in the issue. Determine the public API needed to evaluate a condition outside templating, and consider the existing quoting and efficiency concerns as completion criteria.