feat: Adds the ability to sort conversations (#6853)

* Add sort filter

* Change UI

* Change filter

* Complete sort by filters

* Style fixes

* Fix default sort

* Update app/javascript/dashboard/components/widgets/conversation/ConversationBasicFilter.vue

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

* Update app/javascript/dashboard/components/widgets/conversation/ConversationBasicFilter.vue

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

* Update app/javascript/dashboard/components/ChatList.vue

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

* Added translation

* Added review fixes

* Add more updates

* Code cleanups

* Update last_activity_at on message received event

* Cleans up the design for chatlist and icons

* Fix sort

* Remove inline styles

* Add tag along with the title

---------

Co-authored-by: Sivin Varghese <64252451+iamsivin@users.noreply.github.com>
Co-authored-by: Pranav Raj S <pranav@chatwoot.com>
Co-authored-by: Nithin David Thomas <1277421+nithindavid@users.noreply.github.com>

app/models/message.rb

@@ -136,7 +136,8 @@ class Message < ApplicationRecord
       conversation_id: conversation.display_id,
       conversation: {
         assignee_id: conversation.assignee_id,
-        unread_count: conversation.unread_incoming_messages.count
+        unread_count: conversation.unread_incoming_messages.count,
+        last_activity_at: conversation.last_activity_at.to_i
       }
     )
     data.merge!(echo_id: echo_id) if echo_id.present?