[1.1.0] improve/clean component library and stories

if i understood well what you told me during the meeting:

• more stories for components
• update ui-patterns-stories-full.html.twig template override with somethign like that:
  

  --- a/templates/ui_patterns_library/ui-patterns-stories-full.html.twig
  +++ b/templates/ui_patterns_library/ui-patterns-stories-full.html.twig
  @@ -10,20 +10,22 @@
       <div class="ui_patterns_story__story">
         {% if variants and not story.props.variant %}
           {% for variant_id, variant in variants %}
  -          {{ _self.render_variant(component_id, story_id, variant_id, variant) }}
  +          {{ _self.render_variant(component_id, story_id, story, variant_id, variant) }}
           {% endfor %}
         {% else %}
           {{ component_story(component_id, story_id, {}, {}, true) }}
  +        <pre><code>{{ story|json_encode(constant('JSON_PRETTY_PRINT')) }}

  {% endif %}

  {% endmacro %}
  -{% macro render_variant(component_id, story_id, variant_id, variant) %}
  +{% macro render_variant(component_id, story_id, story, variant_id, variant) %}

  {{ variant.title }} ({{ variant_id }})
  

  {% if variant.description %}
  

  {{ variant.description }}

  {% endif %}
  +

  {{ story|json_encode(constant('JSON_PRETTY_PRINT')) }}

  {{ component_story(component_id, story_id, {}, {variant: variant_id}, true) }}

  {% endmacro %}