feat: Add conversation delete feature (#11677)

<img width="1240" alt="Screenshot 2025-06-05 at 12 39 04 AM"
src="https://github.com/user-attachments/assets/0071cd23-38c3-4638-946e-f1fbd11ec845"
/>


## Changes

Give the admins an option to delete conversation via the context menu

- enable conversation deletion in routes and controller
- expose delete API on conversations
- add delete option in conversation context menu and integrate with card
and list
- implement store action and mutation for delete
- update i18n with new strings

fixes: https://github.com/chatwoot/chatwoot/issues/947

---------

Co-authored-by: iamsivin <iamsivin@gmail.com>
Co-authored-by: Sivin Varghese <64252451+iamsivin@users.noreply.github.com>
Co-authored-by: Pranav <pranavrajs@gmail.com>

enterprise/app/jobs/enterprise/delete_object_job.rb

@@ -4,7 +4,7 @@ module Enterprise::DeleteObjectJob
   end
 
   def create_audit_entry(object, user, ip)
-    return unless ['Inbox'].include?(object.class.to_s) && user.present?
+    return unless %w[Inbox Conversation].include?(object.class.to_s) && user.present?
 
     Enterprise::AuditLog.create(
       auditable: object,

enterprise/app/models/enterprise/audit/conversation.rb

@@ -0,0 +1,7 @@
+module Enterprise::Audit::Conversation
+  extend ActiveSupport::Concern
+
+  included do
+    audited only: [], on: [:destroy]
+  end
+end