Belgium's tax authorities now require pro rata deduction to be included in VAT exports. This update adds the mandatory pro rata field to the VAT export wizard for businesses that qualify. A new module has been created to support this additional functionality in the export process.

Belgium now asks the pro rata deduction for the VAT export. 
Mandatory if the business is concerned.
Added new module to be able to add fields to the wizard.

task-3916995

Forward-Port-Of: odoo/enterprise#66171
Forward-Port-Of: odoo/enterprise#65442

The IoT module now loads the websocket connection information during the initial page load instead of making a separate request each time a view opens. This improves performance by reducing unnecessary network calls and provides a faster, smoother user experience when working with IoT devices.

`IoTWebsocketService` was making an RPC call every time the view loaded.  
Now, we load it in the session_info to provide it to the view while rendering html.

Task: 4037030

This update removes unnecessary action buttons that opened journal items from the GST Return Period report sections. By eliminating these extra actions, the GST return reporting process is now more focused and efficient, reducing clutter and helping users concentrate on the essential information they need.

With this PR, the actions to open all journal items have been removed from all GSTR sections of the GST return Period.

This change helps streamline the GST Return by eliminating unnecessary actions, ensuring a more focused and efficient reporting process.

**task**-3908555

This update improves how GST tax reports handle point of sale transactions in India by automatically setting the Place of Supply information on general journals when it's missing. The changes also fix issues with missing point of sale details in GST return reports, ensuring more accurate tax compliance reporting for Indian businesses.

In this PR:
- Set Place of Supply on 'general' journals with POS sessions if a country is
India and Place of Supply are not set.
- Adjusted state ID computation for account moves with POS sessions.
- Fixed handling of missing POS line details in GST return period report.


Task ID: 3935317