Feature: Get the value of product options by title

Some time ago, I was asked by Stan Kostadinov to create an issue here.

Feature:

1. At the moment it is not possible to get a list of all the values per option. EG:
   Getting all the values for the option 'color' would have to be done like this:

{% for product_option in product.options_with_values %}
 {% if product_option == 'color' %}
  {% for value in product_option.values %}
   {{ value }}
  {% endfor %}
 {% endif %}
{% endfor %}

Would it be possible to have something like this instead?:

{% for value in product.options_with_values['color'] %}
   {{ value }}
{% endfor %}

2. Get the value of a variant option by title. EG:
   On some products we have the following options: Size, Color, Length. Respectively, these would be variant.option 1, 2 and 3. However, on some other products we have the options: Size and Pattern (Again, variant.option 1 and 2).
   If we want to get the color option of a product variant, whether it's there or not, whether the store admin or whoever we build the theme for has size before color, or the other way around. As a developer, you cannot know for sure whether the option 'color' will always be 'variant.option2'.
   So, what do you do?

{% for product_option in product.options %}
 {% if product_option == 'color' or product_option == 'colour' %}
  {% assign has_color = true %}
  {% assign color_index = 'option' | append: forloop.index %}
 {% endif %}
{% endfor %}

{% if has_color %}
 {% for variant in product.variants %}
 {{  variant[color_index] }}
 {% endfor %}
{% endif %}

Could we use something like variant.option['color'] or be able to get the title as well, instead of only the value? (variant.option1.title , variant.option1.value)

This could save a lot of lines of code and unnecesarry looping through tons of products/variants.

Start by reviewing the existing product.options_with_values, product.options, product.variants, and variant.option access patterns shown in the issue. Determine how title-based option lookup should behave for missing options and whether both option titles and values are required; completion would need an agreed API and corresponding tests.