FEATURE: Add automation statistics tracking to Automation (#31921)

introduces comprehensive statistics tracking for the Discourse
Automation plugin, allowing users to monitor the performance and
execution patterns of their automations:

- Add `discourse_automation_stats` table to track execution metrics
including run counts, execution times, and performance data
- Create a new `Stat` model to handle tracking and retrieving automation
statistics
- Update the admin UI to display automation stats (runs today/this
week/month and last run time)
- Modernize the automation list interface using Glimmer components
- Replace the older enable/disable icon with a toggle switch for better
UX
- Add schema annotations to existing models for better code
documentation
- Include extensive test coverage for the new statistics functionality

This helps administrators understand how their automations are
performing and identify potential bottlenecks or optimization
opportunities.

---------

Co-authored-by: Joffrey JAFFEUX <j.jaffeux@gmail.com>
Co-authored-by: Ted Johansson <ted@discourse.org>

plugins/automation/app/models/discourse_automation/automation.rb

@@ -17,6 +17,8 @@ module DiscourseAutomation
              dependent: :delete_all,
              foreign_key: "automation_id"
 
+    has_many :stats, class_name: "DiscourseAutomation::Stat", dependent: :delete_all
+
     validates :script, presence: true
     validate :validate_trigger_fields
 
@@ -137,8 +139,10 @@ module DiscourseAutomation
           if scriptable.background && !running_in_background
             trigger_in_background!(context)
           else
-            triggerable&.on_call&.call(self, serialized_fields)
-            scriptable.script.call(context, serialized_fields, self)
+            Stat.log(id) do
+              triggerable&.on_call&.call(self, serialized_fields)
+              scriptable.script.call(context, serialized_fields, self)
+            end
           end
         ensure
           DiscourseAutomation.set_active_automation(nil)
@@ -187,3 +191,17 @@ module DiscourseAutomation
     end
   end
 end
+
+# == Schema Information
+#
+# Table name: discourse_automation_automations
+#
+#  id                 :bigint           not null, primary key
+#  name               :string
+#  script             :string           not null
+#  enabled            :boolean          default(FALSE), not null
+#  created_at         :datetime         not null
+#  updated_at         :datetime         not null
+#  last_updated_by_id :integer          not null
+#  trigger            :string
+#