Chore: Check for deprecations using eslint plugin

Chore: environment file replacement stopped.
Chore: All components are now standalone and removed all modules
Chore: App routing is now in app.routes and similarly for all submodules
Chore: Http interceptors are now functional and split refresh interceptor into a separate one.

overlord/src/app/closing-stock/closing-stock.component.spec.ts

@@ -1,6 +1,4 @@
-import { ComponentFixture, TestBed, waitForAsync } from '@angular/core/testing';
-import { ReactiveFormsModule } from '@angular/forms';
-import { RouterTestingModule } from '@angular/router/testing';
+import { ComponentFixture, TestBed } from '@angular/core/testing';
 
 import { ClosingStockComponent } from './closing-stock.component';
 
@@ -8,14 +6,11 @@ describe('ClosingStockComponent', () => {
   let component: ClosingStockComponent;
   let fixture: ComponentFixture<ClosingStockComponent>;
 
-  beforeEach(waitForAsync(() => {
-    TestBed.configureTestingModule({
-      imports: [ReactiveFormsModule, RouterTestingModule],
-      declarations: [ClosingStockComponent],
+  beforeEach(async () => {
+    await TestBed.configureTestingModule({
+      imports: [ClosingStockComponent],
     }).compileComponents();
-  }));
 
-  beforeEach(() => {
     fixture = TestBed.createComponent(ClosingStockComponent);
     component = fixture.componentInstance;
     fixture.detectChanges();