Convert Olivero's pager to use single directory components

Initial pass at converting the pager for sdc

Thanks for all of the work on this! Initial review below:

1. +++ b/core/themes/olivero/components/pager/pager.components.yml
   @@ -0,0 +1,21 @@
   +$schema: https://git.drupalcode.org/project/sdc/-/raw/1.x/src/metadata.schema.json
   

   Lets get rid of the schema, status, and group keys here.

2. +++ b/core/themes/olivero/components/pager/pager.components.yml
   @@ -0,0 +1,21 @@
   +slots:
   

   There's no pager block, so this is not needed

3. +++ b/core/themes/olivero/components/pager/pager.twig
   @@ -0,0 +1,129 @@
   +#}
   

   Lets keep these comments within the pager.html.twig

4. +++ b/core/themes/olivero/components/pager/pager.twig
   @@ -0,0 +1,129 @@
   +	{% if items %}
   ...
   +								{{ current == key ? 'Current page'|t : 'Page'|t }}
   

   Need to use spaces not tabs.

5. +++ b/core/themes/olivero/components/pager/pager.twig
   @@ -0,0 +1,129 @@
   +                {% include "@olivero/../images/pager-previous.svg" %}
   

   Lets 1) convert this to a twig function, and 2) bring all of the pager's images into the component and reference them using componentMetadata.

6. +++ b/core/themes/olivero/components/pager/pager.twig
   @@ -0,0 +1,129 @@
   +							</span>
   

   Need to use spaces not tabs.

7. +++ b/core/themes/olivero/templates/navigation/pager.html.twig
   @@ -30,90 +30,12 @@
   +{% embed "olivero:pager" with {
   

   Since we're not using any blocks here, let's use an include function.

Addressed feedbacks from #6, attached interdiff for same. please review

The Needs Review Queue Bot → tested this issue. It fails the Drupal core commit checks. Therefore, this issue status is now "Needs work".

This does not mean that the patch needs to be re-rolled or the MR rebased. Read the Issue Summary, the issue tags and the latest discussion here to determine what needs to be done.

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Tried to fix failures in #8.