[8.0] Port the module 'account_move_template' to the new API

This PR contains the module ***account_move_template*** ported to the new API.
Test and installation seems to me ok.

In this case, we need to take it into account when migrating ```account_invoice_template``` https://github.com/OCA/account-invoicing/blob/7.0/account_invoice_template/wizard/select_template.py#L90