Feat/marketplace complete toggles

[bindugayathri]

Summary

Added vendor product management controls to the Marketplace Settings. This PR introduces a new setting that allows administrators to enable or disable vendor product creation, alongside the existing product approval requirement. Both settings are persisted using store metadata, ensuring reliable configuration without relying on legacy feature flags.

Changes

• Added a Marketplace Vendor Products settings section containing:
  • Require Product Approval toggle.
  • Allow Vendor Product Creation toggle.
• Implemented backend validation to prevent vendors from creating products when product creation is disabled.
• Updated the vendor products API to return an appropriate error response when creation is restricted.
• Unified boolean setting persistence using the store-boolean-setting utility.
• Added localization entries for the new settings in en.json.

Testing

Executed the integration test suite:

yarn test:integration http/product/vendor/product-approval-setting.spec.ts

Checklist

• Updated localization files where required.
• Added/updated tests covering the new functionality.

Linked Issues

Fixes #1238