This update modernizes the Belgian Intrastat reporting module so it works with Odoo's newer application framework. It also corrects a missing import issue and reorganizes module files, improving reliability and maintainability for Belgian compliance reporting.

Description of the issue/feature this PR addresses:

Current behavior before PR:

Desired behavior after PR is merged:
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The data import component was updated to use Odoo's newer internal framework and reorganized for easier maintenance. This should make future improvements and fixes safer while preserving the import experience for users.

task: https://www.odoo.com/web#id=12293&view_type=form&model=project.task&menu_id=3942&action=327
pad: https://pad.odoo.com/p/r.GZ1YLOalCvJkJMHZ

Recruitment users can now filter job applications based on whether they are active or archived. This makes it easier to review current applications separately from older archived records and improves reporting clarity.

It is now possible to filter the applications on their archived status.

opw-682119