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/client/client-list-resolver.service.ts

@@ -1,16 +1,17 @@
 import { Injectable } from '@angular/core';
-import { ActivatedRouteSnapshot, Resolve, Router, RouterStateSnapshot } from '@angular/router';
-import { Client } from './client';
+import { Resolve } from '@angular/router';
 import { Observable } from 'rxjs/internal/Observable';
+
+import { Client } from './client';
 import { ClientService } from './client.service';
 
 @Injectable({
   providedIn: 'root',
 })
 export class ClientListResolver implements Resolve<Client[]> {
-  constructor(private ser: ClientService, private router: Router) {}
+  constructor(private ser: ClientService) {}
 
-  resolve(route: ActivatedRouteSnapshot, state: RouterStateSnapshot): Observable<Client[]> {
+  resolve(): Observable<Client[]> {
     return this.ser.list();
   }
 }