feat: #3613646 Add a Country content type with its listing, cards and full page layout

Issue: #3613646 Add a Country content type with its listing, cards and full page layout

What this adds

Countries become real content instead of one hand-built canvas page.

• Content type country, modelled on how Varbase Blog Base manages a content type: 7 new field storages and 9 field instances (summary, featured image, our role, on the ground text and image, figures description, three key figures with their descriptions, key partners).
• Form display, card and overlay_card_medium view displays with their Drupal Canvas content templates.
• The full Canvas template implements the design: hero (country name, summary, image), Our Role, On the Ground, By the Numbers, Key Country Partners.
• views.view.countries with block displays for the listing and the "see other countries" section, and a pathauto pattern so a country lives at /countries/[node:title].
• Five demo countries — Afghanistan, Ecuador, Kenya, Lebanon, Ukraine — each with its own hero image taken from the Horizon Aid design file, shipped as recipe default content (file plus media entities, editor-facing names and alt text).
• The Country Page canvas page and the menu links that pointed at it are removed.

Notes on the implementation

• The template's components are declared against the base theme and repointed with repointComponentTreeToTheme: {theme: default}, so the component versions resolve on the site that applies the recipe instead of being pinned to one build.
• The key figures are built from heading and text rather than the figure component: figure exposes no props to a Canvas content template, which aborts the install. Reported separately on the theme.
• Images bound from entity fields currently render with a relative source, which affects blog pages too. Reported separately on the theme; it is not introduced here.
• Two sections of the design are not placed yet: the per-country updates listing (needs a relation between blog posts and countries) and "See Other Countries" (needs the views block to exist as a Canvas component).

How this was verified

• drush site:install recipes/horizonaid from a dropped database: exit code 0, no error lines, no file-metadata errors.
• /, /countries, /countries/afghanistan and /countries/kenya all return 200 with no Twig LoaderError and no ComponentNotFoundException; /country-page correctly returns 404.
• Five country nodes are created with /countries/<name> aliases and their own images.
• gitlab-ci-local runs the project pipeline green (build:composer-validate, validate:yaml-lint).

User interface changes

• A Country content type is available, and countries are published at /countries/[node:title].
• The Country Page canvas page no longer ships.

API changes

None.

Data model changes

• New content type country and new node fields: field_our_role, field_on_the_ground, field_on_the_ground_image, field_figures_description, field_figure_number, field_figure_description, field_partners.

Release notes snippet

• Added a Country content type with its listing, card and full page layouts, five demo countries with design images, and removed the single Country Page canvas page.

AI-Generated: Yes

Checkpoints

• File an issue about this project
• Addition/Change/Update/Fix to this project
• Testing to ensure no regression
• Automated unit/functional testing coverage
• Developer Documentation support on feature change/addition
• User Guide Documentation support on feature change/addition
• UX/UI designer responsibilities
• Accessibility and Readability
• Reviewed by a human
• Code review by maintainers
• Full testing and approval
• Credit contributors
• Review with the product owner
• Update Release Notes
• Release