Add POST /api/v1/admin/marketplace-import-jobs endpoint to allow
admins to create import jobs for any vendor.
Changes:
- Add AdminMarketplaceImportJobRequest schema with vendor_id field
- Add create_marketplace_import_job endpoint in admin/marketplace.py
- Make vendor_code and vendor_name optional in response model
to handle edge cases where vendor relationship may not be loaded
This fixes the 405 Method Not Allowed error when trying to import
products from the admin marketplace page.
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Co-Authored-By: Claude <noreply@anthropic.com>
Samir Boulahtit
962cc8dcef