Add CRM section to Navigation module

I tested this locally. This looks great!

My only suggestion is to remove the "Crm" prefix from CrmNavigationDeriver as it is unnecessary and our other class names all omit the module name prefix.

Looks good to me, thanks!

I appreciate your work on this and the several other issues you have worked on.

We need tests for new features. Can you add tests for the navigation integration?

I think we should also add the contacts to create menu.

I am not familiar with navigation. I took a brief look at how content is added to the create menu.

NavigationContentLinks.php

$this->addCreateEntityLinks('crm_contact_type', 'entity.crm_contact.add_page', $links);

NavigationHooks.php

  #[Hook('menu_links_discovered_alter')]
  public function menuLinksDiscoveredAlter(&$links): void {
    $navigation_links = \Drupal::classResolver(NavigationContentLinks::class);
    assert($navigation_links instanceof NavigationContentLinks);
    $navigation_links->addMenuLinks($links);
  }