Currently, bulk-importing translations for non-module loaded data is hard
1. PO file import works fine, but exporting a PO template for non-module loaded
data is near impossible (since PO exports will only export entire modules)
2. Import of translated values during csv/excel file import is not supported
This commit fix the issue by improve 1 which reuses the translation export
wizard for modules to export translations for non-module records. So that user
can export translations for selected records with a domain and import the po
file after translating
[DEBUG MODE] Settings -> Translations -> Export translations -> Export Type
("model") -> Select `Model to Export` and `Model Domain` -> Export
The framework will
1. create external ids for records without external ids
2. export translations for stored translated and inherited translated fields
closesodoo/odoo#138531
Task: 3463505
Signed-off-by: Raphael Collet <rco@odoo.com>