feat: list and remove umpires from tab 2

src/app/fullname-pipe.ts

@@ -0,0 +1,13 @@
+import { Pipe, PipeTransform } from '@angular/core';
+import { Umpire } from 'db';
+
+@Pipe({
+  name: 'fullname',
+  standalone: true
+})
+export class FullnamePipe implements PipeTransform {
+  transform(value: Umpire, ...args: unknown[]): string {
+    // TODO: in case of multilang, change here
+    return value.lastName + ' ' + value.firstName;
+  }
+}