fix: attachments

[RitvikSardana]

Issue:

1. When a ticket was created users attachment were not showing, this is because attachments object was not being passed.
2. When an agent attached a file that file becomes private and the customer is not able to access it.

Solution:

1. Attach tickets object while creating ticket.
2. Attach the file uploaded to the ticket, to share its access with the customers having access to the tickets.