feat: add activity message for priority change (#6933)

* feat: add priority const

* feat: add toggle priority method

* feat: update controller route and specs

* refactor: status change method

* refactor: abstract label change and mute activity

* feat: add priority change_activity

* fix: interpolation for previous_changes

* refactor: reduce cognitive complexity of priority_change_activity

* refactor: move priority activity message handler to a separate module

* refactor: move typing logic to a service

* refactor: tests to reduce complexity

* fix: typo

* fix: constants

* fix: priority conditions

* fix: add a response

* fix: argument destructuring in I18n.t

---------

Co-authored-by: Muhsin Keloth <muhsinkeramam@gmail.com>

app/services/conversations/typing_status_manager.rb

@@ -0,0 +1,26 @@
+class Conversations::TypingStatusManager
+  include Events::Types
+
+  attr_reader :conversation, :user, :params
+
+  def initialize(conversation, user, params)
+    @conversation = conversation
+    @user = user
+    @params = params
+  end
+
+  def trigger_typing_event(event, is_private)
+    user = @user.presence || @resource
+    Rails.configuration.dispatcher.dispatch(event, Time.zone.now, conversation: @conversation, user: user, is_private: is_private)
+  end
+
+  def toggle_typing_status
+    case params[:typing_status]
+    when 'on'
+      trigger_typing_event(CONVERSATION_TYPING_ON, params[:is_private])
+    when 'off'
+      trigger_typing_event(CONVERSATION_TYPING_OFF, params[:is_private])
+    end
+    # Return the head :ok response from the controller
+  end
+end