Add User Research banner to the GOV.UK homepage

WIP commit - spacing change required

app/views/homepage/_services_and_information.html.erb

@@ -1,6 +1,12 @@
 <section class="homepage-section homepage-section--services-and-info">
   <div class="govuk-grid-row">
     <div class="govuk-grid-column-full">
+       <%= render "govuk_publishing_components/components/intervention", {
+        suggestion_text: t("homepage.index.user_research_banner_suggestion_text"),
+        suggestion_link_text: t("homepage.index.user_research_banner_link_text"),
+        suggestion_link_url: t("homepage.index.user_research_banner_link_href"),
+        new_tab: true,
+      } %>
       <div class="homepage-section__heading homepage-section__heading--border-none">
         <%= render "govuk_publishing_components/components/heading", {
           font_size: "m",
@@ -12,7 +18,7 @@
           },
         } %>
       </div>
-      
+
       <ul class="homepage-services-and-info__list" data-module="gem-track-click ga4-link-tracker">
         <% t("homepage.categories").each_with_index do | item, index | %>
           <%= render partial: "homepage/chevron_card", locals: {

config/locales/cy.yml

@@ -941,6 +941,9 @@ cy:
       tax_account:
       uk_bank_holidays:
       universal_credit:
+      user_research_banner_suggestion_text:
+      user_research_banner_link_text:
+      user_research_banner_link_href:
     most_active:
   'no': Na
   or:

config/locales/en.yml

@@ -625,6 +625,9 @@ en:
       tax_account: Sign in to your personal tax account
       uk_bank_holidays: UK bank holidays
       universal_credit: Sign in to your Universal Credit account
+      user_research_banner_suggestion_text: Help improve GOV.UK
+      user_research_banner_link_text: Take part in user research (opens in a new tab)
+      user_research_banner_link_href: https://surveys.publishing.service.gov.uk/s/GOVStudy1/
     # If adding or removing items remember to update the `columns()` mixin in
     # the homepage-most-active-list class in _homepage.scss.
     most_active:

test/integration/homepage_test.rb

@@ -9,6 +9,11 @@ class HomepageTest < ActionDispatch::IntegrationTest
     visit "/"
     assert_equal 200, page.status_code
     assert_equal "Welcome to GOV.UK", page.title
+    assert page.has_content?(I18n.t("homepage.index.user_research_banner_suggestion_text", locale: :en))
+    assert page.has_link?(
+      I18n.t("homepage.index.user_research_banner_link_text", locale: :en),
+      href: I18n.t("homepage.index.user_research_banner_link_href", locale: :en),
+    )
   end
 
   context "when visiting a Welsh content item first" do