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/loans/edit-loans-account/edit-loans-account.component.html

@@ -68,7 +68,7 @@
       <ng-template matStepLabel>{{"labels.inputs.PREVIEW" | translate}}</ng-template>
 
       <mifosx-loans-account-preview-step [loansAccountTemplate]="loansAccountAndTemplate"
-        [loansAccountProductTemplate]="loansAccountProductTemplate" [loansAccount]="loansAccount" (submit)="submit()">
+        [loansAccountProductTemplate]="loansAccountProductTemplate" [loansAccount]="loansAccount" (submitEvent)="submit()">
       </mifosx-loans-account-preview-step>
 
     </mat-step>

src/app/loans/edit-loans-account/edit-loans-account.component.ts

@@ -1,4 +1,4 @@
-import { Component, OnInit, ViewChild } from '@angular/core';
+import { Component, ViewChild } from '@angular/core';
 import { ActivatedRoute, Router } from '@angular/router';
 import { LoansService } from '../loans.service';
 import { LoansAccountDetailsStepComponent } from '../loans-account-stepper/loans-account-details-step/loans-account-details-step.component';
@@ -17,7 +17,7 @@ import { Dates } from 'app/core/utils/dates';
   templateUrl: './edit-loans-account.component.html',
   styleUrls: ['./edit-loans-account.component.scss']
 })
-export class EditLoansAccountComponent implements OnInit {
+export class EditLoansAccountComponent {
 
   @ViewChild(LoansAccountDetailsStepComponent, { static: true }) loansAccountDetailsStep: LoansAccountDetailsStepComponent;
   @ViewChild(LoansAccountTermsStepComponent, { static: true }) loansAccountTermsStep: LoansAccountTermsStepComponent;
@@ -53,9 +53,6 @@ export class EditLoansAccountComponent implements OnInit {
     this.loanId = this.route.snapshot.params['loanId'];
   }
 
-  ngOnInit() {
-  }
-
   /**
    * Sets loans account product template and collateral template
    * @param {any} $event API response