[IMP] l10n_be: review the CoA based on the BNB xbrl files

Task 2213348

There where missing accounts and the CoA was not consistent (like some
income accounts but not the expense counterpart).
We chose to take the accounts from the National Bank of Belgium, and
took the opportunity to translate all the accounts in the 3 official
languages of Belgium + english.

closes odoo/odoo#47815

Signed-off-by: Quentin De Paoli (qdp) <qdp@openerp.com>