Setup counter for Productivity Analytics

This change sets up a usage counter for productivity analytics feature.

lib/gitlab/usage_data.rb

@@ -142,6 +142,7 @@ module Gitlab
          Gitlab::UsageDataCounters::SnippetCounter,
          Gitlab::UsageDataCounters::SearchCounter,
          Gitlab::UsageDataCounters::CycleAnalyticsCounter,
+         Gitlab::UsageDataCounters::ProductivityAnalyticsCounter,
          Gitlab::UsageDataCounters::SourceCodeCounter,
          Gitlab::UsageDataCounters::MergeRequestCounter
         ]

lib/gitlab/usage_data_counters/productivity_analytics_counter.rb

+# frozen_string_literal: true
+
+module Gitlab::UsageDataCounters
+  class ProductivityAnalyticsCounter < BaseCounter
+    KNOWN_EVENTS = %w[views].freeze
+    PREFIX = 'productivity_analytics'
+  end
+end

spec/lib/gitlab/usage_data_counters/productivity_analytics_counter_spec.rb

+# frozen_string_literal: true
+
+require 'spec_helper'
+
+describe Gitlab::UsageDataCounters::ProductivityAnalyticsCounter do
+  it_behaves_like 'a redis usage counter', 'ProductivityAnalytics', :views
+
+  it_behaves_like 'a redis usage counter with totals', :productivity_analytics, views: 3
+end

spec/lib/gitlab/usage_data_spec.rb

@@ -62,6 +62,7 @@ describe Gitlab::UsageData do
         influxdb_metrics_enabled
         prometheus_metrics_enabled
         cycle_analytics_views
+        productivity_analytics_views
       ))
       expect(subject).to include(
@@ -79,6 +80,7 @@ describe Gitlab::UsageData do
         web_ide_merge_requests: a_kind_of(Integer),
         navbar_searches: a_kind_of(Integer),
         cycle_analytics_views: a_kind_of(Integer),
+        productivity_analytics_views: a_kind_of(Integer),
         source_code_pushes: a_kind_of(Integer)
       )
     end