Add monaco editor for json editing and diff view (#4)

Reviewed-on: #4

src/app/app.config.ts

@@ -13,6 +13,7 @@ import {
   MAT_ICON_DEFAULT_OPTIONS,
   MatIconRegistry,
 } from '@angular/material/icon';
+import { provideMonacoEditor } from 'ngx-monaco-editor-v2';
 
 export const appConfig: ApplicationConfig = {
   providers: [
@@ -41,5 +42,6 @@ export const appConfig: ApplicationConfig = {
       provide: MAT_ICON_DEFAULT_OPTIONS,
       useValue: { fontSet: 'material-symbols-rounded' },
     },
+    provideMonacoEditor(),
   ],
 };