Prettied, Linted and updated angular.json according to the latest schematic of Angular CLI.

Now all that is needed is to make it ready for strict compiling.
Removed eslint-plugin-prettier as it is not recommended and causes errors for both eslint and prettier

Bumped to v8.0.0

overlord/src/app/purchase/purchase-routing.module.ts

@@ -1,8 +1,10 @@
-import { NgModule } from '@angular/core';
 import { CommonModule } from '@angular/common';
+import { NgModule } from '@angular/core';
 import { RouterModule, Routes } from '@angular/router';
-import { PurchaseResolver } from './purchase-resolver.service';
+
 import { AuthGuard } from '../auth/auth-guard.service';
+
+import { PurchaseResolver } from './purchase-resolver.service';
 import { PurchaseComponent } from './purchase.component';
 
 const purchaseRoutes: Routes = [