feat: conversation participants (#4145)

Fixes #241
Fixes: chatwoot/product#648

Co-authored-by: Aswin Dev P.S <aswindevps@gmail.com>
Co-authored-by: Nithin David Thomas <1277421+nithindavid@users.noreply.github.com>
Co-authored-by: Muhsin Keloth <muhsinkeramam@gmail.com>
Co-authored-by: Pranav Raj S <pranav@chatwoot.com>

app/javascript/dashboard/components/layout/config/sidebarItems/conversations.js

@@ -14,6 +14,8 @@ const conversations = accountId => ({
     'conversations_through_team',
     'conversation_mentions',
     'conversation_through_mentions',
+    'conversation_participating',
+    'conversation_through_participating',
     'folder_conversations',
     'conversations_through_folders',
     'conversation_unattended',