[Finsishes #187354256] Marking product as available or unavailable

[amin-leon]

Purpose

Products should be availed for buyers to purchase:
As a seller I should be able to mark a product as available or unavailable manually in order to make it available for the buyers on not.
Reasons can be: expiry date, low on stock

Changes Made

• Added a column "available" on Size model
• Created two controllers: markProductAsAvailbale and markProductAsUnavailbale
• Added swagger docs for those two controllers

Testing Instructions

None

Related Issues

None

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