[IMP] account_edi,account_edi_extended,l10n_es_edi_sii,l10n_it_edi_sdicoop:...

[IMP] account_edi,account_edi_extended,l10n_es_edi_sii,l10n_it_edi_sdicoop: improve the ability to debug EDI xml

When using EDI, documents often fail to be submitted to the relevant API. This provides the ability to generate and download the XML

Task-2669041

closes odoo/odoo#79160

Related: odoo/enterprise#21970
Signed-off-by: Laurent Smet <las@openerp.com>