Feature: Net Core Service

[rhaetscher]

Replace static List in Frontend with List in Backend.

Implement following CRUD operations:

C - Create new Item R - Read Item U - Update Item D - Delete Item

R - Read List

[sleepyRias]

i think it works

[rhaetscher]

@sleepyRias please comment for @Multi538 how the API works, e.g.

GET /games returns Game[] wobei

Game {
title: string
}