Add usage ping for repo analytics page

Usage ping for every user that views the repo
analytics page.

config/feature_flags/development/usage_data_i_testing_group_code_coverage_visit_total.yml

+---
+name: usage_data_i_testing_group_code_coverage_visit_total
+introduced_by_url: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/51382
+rollout_issue_url:
+milestone: '13.8'
+type: development
+group: group::testing
+default_enabled: true

ee/app/controllers/groups/analytics/repository_analytics_controller.rb

 # frozen_string_literal: true
 
 class Groups::Analytics::RepositoryAnalyticsController < Groups::Analytics::ApplicationController
+  include RedisTracking
   layout 'group'
 
   before_action :load_group
   before_action -> { check_feature_availability!(:group_repository_analytics) }
   before_action -> { authorize_view_by_action!(:read_group_repository_analytics) }
+  track_redis_hll_event :show, name: 'i_testing_group_code_coverage_visit_total', feature: :usage_data_i_testing_group_code_coverage_visit_total, feature_default_enabled: true
 
   def show
     track_event(**pageview_tracker_params)

ee/changelogs/unreleased/224624-usage-ping-code-coverage.yml

+---
+title: Capture unique user views of group repository analytics page
+merge_request: 51382
+author:
+type: added

ee/spec/controllers/groups/analytics/repository_analytics_controller_spec.rb

@@ -33,6 +33,19 @@ RSpec.describe Groups::Analytics::RepositoryAnalyticsController do
       )
     end
 
+    context 'unique users tracking' do
+      before do
+        allow(Gitlab::UsageDataCounters::HLLRedisCounter).to receive(:track_event)
+      end
+
+      it_behaves_like 'tracking unique hll events', :usage_data_i_testing_group_code_coverage_visit_total do
+        subject(:request) { get :show, params: { group_id: group } }
+
+        let(:target_id) { 'i_testing_group_code_coverage_visit_total' }
+        let(:expected_type) { instance_of(String) }
+      end
+    end
+
     context 'when license is missing' do
       before do
         stub_licensed_features(feature_name => false)

lib/gitlab/usage_data_counters/known_events/common.yml

@@ -253,6 +253,11 @@
   redis_slot: testing
   aggregation: weekly
   feature_flag: usage_data_i_testing_metrics_report_widget_total
+- name: i_testing_group_code_coverage_visit_total
+  category: testing
+  redis_slot: testing
+  aggregation: weekly
+  feature_flag: usage_data_i_testing_group_code_coverage_visit_total
 # Project Management group
 - name: g_project_management_issue_title_changed
   category: issues_edit