Create a rake task to gather license info

* Added changelog file
* Added rake task file
* Moved file to proper location
* Changed wording to make it clearer
* Used different method as per Remy's recomendation
* Changed prints to puts

changelogs/unreleased/36905-create-a-rake-task-to-gather-license-info.yml

+---
+title: Create a license info rake task
+merge_request: 20501
+author: Jason Colyer
+type: added

ee/lib/tasks/gitlab/license.rake

+# frozen_string_literal: true
+
+namespace :gitlab do
+  namespace :license do
+    desc 'GitLab | Gather license related information'
+    task info: :gitlab_environment do
+      license = Gitlab::UsageData.license_usage_data
+      puts "Today's Date: #{Date.today}"
+      puts "Current User Count: #{license[:active_user_count]}"
+      puts "Max Historical Count: #{license[:historical_max_users]}"
+      puts "Max Users in License: #{license[:license_user_count]}"
+      puts "License valid from: #{license[:license_starts_at]} to #{license[:license_expires_at]}"
+      puts "Email associated with license: #{license[:licensee]['Email']}"
+    end
+  end
+end