Add collected_data_categories to usage ping payload

Requirements

1. Add a new metric to indicate what data types we send in JSON payload

   Add Standard metric collected_data_categories to usage ping payload.

   The values we set in this metric should be aligned and reflect the data sent to VersionsApp

2. Add examples of payloads to issue https://gitlab.com/gitlab-data/analytics/-/issues/9384 for data team.

Scenarios

Scenario 1

For free users when there is no license License.current.present? == false and usage ping enabled

collected_data_categories: [Standard, Subscription, Optional, Operational]

Scenario 2

For free users when there is no license License.current.present? == false and usage ping disabled we don't send any data

Scenario 3

For a customer when there is a license License.current.present? == true. With usage ping enabled and operational data enabled(License.current.usage_ping? == true)

collected_data_categories: [Standard, Subscription, Optional, Operational]

Scenario 4

For a customer when there is a license License.current.present? == true. With usage ping disabled and operational data enabled(License.current.usage_ping? == true)

collected_data_categories: [Standard, Subscription, Operational]

Scenario 5

For a customer when there is a license License.current.present? == true. With usage ping enabled and operational data diabled(License.current.usage_ping? == false)

collected_data_categories: [Standard, Subscription, Optional]

Scenario 6

For a customer when there is a license License.current.present? == true. With usage ping disabled and operational data disabled(License.current.usage_ping? == false) we don't send any data

Implementation proposal

This can be added as a Generic instrumentation class.

module Gitlab
  module Usage
    module Metrics
     class CollectedDataCategoriesMetric < GenericMetric
      # # This could be done probably in a better way
       value do 
         if License.current.present?
           if Gitlab::CurrentSettings.usage_ping_enabled? && License.current.usage_ping?
             select_metrics(data_type: ['Standard', 'Subscription', 'Operational', 'Optional'])
           elsif Gitlab::CurrentSettings.usage_ping_enabled?
             select_metrics(data_type: ['Standard', `Subscription`, 'Optional']) 
           elsif  License.current.usage_ping?
             select_metrics(data_type: ['Standard', 'Subscription', 'Operational']) 
           end
         else
          if Gitlab::CurrentSettings.usage_ping_enabled?
            select_metrics(data_type: ['Standard', 'Subscription', 'Operational', 'Optional'])
          end
         end
       end
    end  
  end
end

# later in usage_data.rb

collected_data_categories: Gitlab::Usage::Metrics::Instrumentations::CollectedDataCategoriesMetric.new(time_frame: 'none').value