refactor!: Restructure grapqhl-schema to better align with clean code and project structure principles

src/api/resolver_helpers.ts

@@ -1,5 +1,8 @@
 import {isObjectType} from "graphql";
 import {logger} from "../logging/logger.js";
+import {Device, Host} from "../schema/generated/graphql";
+
+export const isDevice = (value: Host): value is Device => !!(value as Device).deviceType;
 
 /*
     As a default all . - seperators within a key shall be replaced by a Capital letter of the following word