*point_of_sale, pos_self_order, pos_self_order_epson_printer
In this commit we introduce the functionality that allows
the pos_self_order module to generate receipts.
At the moment, this is possible by using Epson Printers via HTTP.
This is done through the use of the newly added bridge module
`pos_self_order_epson_printer`.
In order to generate the data required for the receipt we add more data
on the first load of the kiosk ( such as company information ) and
also in the `_export_for_self_order` method.
Printing is done through the `printer` service from POS.
closesodoo/odoo#137397
Task: 3487638
Related: odoo/enterprise#48304
Signed-off-by: Joseph Caburnay (jcb) <jcb@odoo.com>