Add shortcut method for getting a modified query

[michaelrog]

It'd be nice to have a shortcut syntax to get a Condition-modified query directly from the fieldtype value.

Current guidance:

{% set query = craft.entries.section('foo') %}
{% do myCondition.modifyQuery(query) %}
{% for entry in query.all() %}
  ...

Some potential implementations:

Option 1 — Get query from the Condition, passing in an ElementQuery

{% set query = myCondition.getModifiedQuery(craft.entries.section('foo')) %}
{% for entry in query.all() %}
  ...

Option 2 — Get query from the Condition, passing in element type (and optional query params)

{% set query = myCondition.find('entries').section('foo') %}
{% for entry in query.all() %}
  ...

{% set query = myCondition.find('entries', {section: 'foo'}) %}
{% for entry in query.all() %}
  ...

Option 3 — Apply Condition to query

{% set query = craft.entries.section('foo').applyCondition(myCondition) %}
{% for entry in query.all() %}
  ...

[piotrpog]

Or we could hust have method like getQuery() - it would just output query generated by condition field. And later you would be able to add your own rules there in the template by chaining other element query methods.