[DEPR] tutor-ecommerce deprecation

[DawoudSheraz]

Open edX will archive the following ecommerce repositories on September 9, 2024.

• ecommerce
• ecommerce-worker
• frontend-app-payment
• frontend-app-ecommerce
• ecommerce-scripts

This implies we will be archiving tutor-ecommerce as this plugin is meant for setting up e-commerce and would no longer serve the purpose once upstream has been deprecated. One last release for tutor-ecommerce may be done before the archive. After that, no new release will be done for this plugin. Officially, it will no longer be maintained.

• https://discuss.openedx.org/t/oscar-based-ecommerce-stack-deprecation/13760
• https://github.com/openedx/public-engineering/issues/22

Action Items

• [ ] Release a new version
• [ ] Add a note about deprecation at the top of the README
• [ ] Mark the repository as read-only
• [ ] Update https://discuss.openedx.org/t/tutor-maintainers/7287
• [ ] Make sure that newer versions are not advertised in the TPI (nightly/sumac) https://github.com/overhangio/tpi
• [ ] Remove the plugin from tutor[full] (in nightly).