build: Replace Codelyzer and TSLint with Angular ESLint

Migrate from the deprecated TSLint to Angluar ESLint. Also fix current
linting issues in the code, in particular:

- Use strict equals operators (=== and !==)
- Remove empty lifecycle methods (mostly ngOnInit)
- Output bindings including aliases should not be named as standard dom
  events (submit)
- Async pipe results should not be negated

src/app/savings/savings-account-stepper/savings-account-preview-step/savings-account-preview-step.component.html

@@ -197,7 +197,7 @@
   <button mat-raised-button [routerLink]="['../..']">
     {{"labels.buttons.Cancel" | translate }}
   </button>
-  <button mat-raised-button color="primary" (click)="submit.emit()">
+  <button mat-raised-button color="primary" (click)="submitEvent.emit()">
     {{"labels.buttons.Submit" | translate }}
   </button>
 </div>

src/app/savings/savings-account-stepper/savings-account-preview-step/savings-account-preview-step.component.ts

@@ -25,7 +25,7 @@ export class SavingsAccountPreviewStepComponent {
   chargesDisplayedColumns: string[] = ['name', 'chargeCalculationType', 'amount', 'chargeTimeType', 'date', 'repaymentsEvery'];
 
   /** Form submission event */
-  @Output() submit = new EventEmitter();
+  @Output() submitEvent = new EventEmitter();
 
   constructor(private translateService: TranslateService) { }