Creating notifications

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Purpose

The purpose of this pull request is to create the notifications related to the product creations, product update and their deletions as well.

Changes Made

Initially, they were a creation of the following fiiles:

src/database/migrations/******-create-notification.js
src/databse/models/notification.ts
src/controllers/notificationControllers.ts
src/controllers/notificationRoutes.ts

These files were also changed, as they were some contents that had to be added. However, nothing deleted compared to what was initially there.

src/helpers/send-email.ts
src/controllers/productControllers.ts

we are planning to include hooks in the product controllers; so that when the

Testing Instructions

No tests made yet!

Related Issues

Products is not yet merged, so I was unable to use it into my branch!

Checklist

Please review the following checklist and make sure all tasks are complete before submitting:

• Code follows the project's coding standards
• Changes are covered by tests
• Documentation is updated (if applicable)
• All tests pass

[patrickhag]

your PR looks cool and ready but consider changing this ASAP, it might take you 3 minutes.