[IMP] account: preview in accrual wizard

addons/account/__manifest__.py

addons/account/models/account_move.py

addons/account/static/src/js/aml_preview.js

addons/account/static/src/js/grouped_view_widget.js

addons/account/static/src/xml/aml_preview_templates.xml

addons/account/static/src/xml/grouped_view_widget.xml

addons/account/views/account.xml

addons/account/views/account_move_views.xml

addons/account/wizard/account_accrual_accounting.py

addons/account/wizard/account_accrual_accounting_view.xml

addons/account/wizard/account_transfer_wizard.py

addons/account/wizard/account_transfer_wizard.xml

addons/l10n_generic_coa/data/account.account.template.csv