Notification and Specialization Pattern

Good afternoon. Please develop a proof of concept as DotNet Core 2.1 application to build the Notification Pattern and the Specialization Pattern. URLs are provided below as reference. To validate business rules and raise Notifications [login to view URL] [login to view URL] All the source code which encapsulates both these patterns should be developed as DotNet Core 2.1 library, showing it work inside a DotNet Core 2.1 console application. All the objects must be instantiated using Autofac dependency injection (via constructor injection). The main application should run several threads to proof that the Notification object maintains a valid state, also adding notifications to it inside the threads. Please develop the main application (console application) with at lease 4 dummy layers to proof that notifications can be added to the notification object in all the layers, to proif that it maintains consistent. Deliverable: Visual Studio 2017 solution with 1 DotNet Core 2.1 library and 1 DotNet Core 2.1 console application. BUDGET: I want this task to be done hourly, with timetracker and screenshot capturing, but with a maximum of USD 60.