Add support for via parent invalidation strategy

Thanks for the work on the configuration and the form, but the module is already configured otherwise so we need to follow that. It would be really confusing to have configruation split up with the drupal config system and service parameters, where it already is now - see https://git.drupalcode.org/project/cache_tools/-/blob/8.x-1.x/cache_tool...

So let's move this to a different service parameter notation, e.g. in addition to the current one let's support an optional ":parents" suffix for terms:

with parents:

parameters:
  cache_tools:
    # Entity types and corresponding bundles that apply for invalidation.
    invalidate:
      taxonomy_term:
        - topics:parents

without parents:

parameters:
  cache_tools:
    # Entity types and corresponding bundles that apply for invalidation.
    invalidate:
      taxonomy_term:
        - topics

Can we start using issue repositories for this? should make things way more convenient to handle than patches :-)

>+ $ancestors = \Drupal::service('entity_type.manager')->getStorage("taxonomy_term")->loadAllParents($tid);

this must be dependency-injected. You can add drunomics/service-utils as composer dependency and use the trait also.

minor, but nesting the following logic below a foreach multiple times makes the code hard to read/follow/maintain:
+ if ($target_type === 'taxonomy_term' && $invalidate_term_parents) {
+ foreach ($this->taxonomyGetParents($value[$key]) as $parentKey) {
+ $tags[] = $tag_prefix_field . $parentKey;
+ }
+ }
+ else {
+ $tags[] = $tag_prefix_field . $value[$key];
+ }

can we factor this out in a helper method?

thx, this looks good now. Let's do some more integration testing and if all is ok, move on with the merge.

testing was all good. and merged! :-)