The update adds a guided submission wizard for EU OSS sales returns, making it easier for businesses to prepare and submit these tax returns. It also improves wording and adds a helpful link in the Belgian VAT return submission flow, reducing confusion for users.

[IMP] l10n_be_reports: VAT return: better phrasing + link in submission wizard

[IMP] l10n_eu_oss_reports: add submission wizard for OSS return

For now, only OSS Sales are supported through a return. OSS Imports will also be in the future.

A new Annual Statements report is available, combining the Balance Sheet, Profit and Loss, and Trial Balance into one report. This makes year-end financial review easier and is available across country-specific accounting report localizations.

This commit creates a new report named "Annual Statements".
This new report is a composite of Balance Sheet, Profit and Loss, and Trial Balance.
The report is also created for each country accounting reports localization.

task-4418407

Users can now create a new journal entry directly from a document, bringing back a workflow similar to earlier document accounting actions. This streamlines accounting work by reducing manual steps when turning uploaded documents into financial records.

We add a new type of server action allowing to create account record from document similarly to the "work flow rule" of v17 (Create Vendor Bill, ...) on which the code is heavily inspired.

Task-4711378