Implement isNumber pipe

src-ui/src/app/pipes/is-number.pipe.ts

@@ -0,0 +1,10 @@
+import { Pipe, PipeTransform } from '@angular/core'
+
+@Pipe({
+  name: 'isNumber',
+})
+export class IsNumberPipe implements PipeTransform {
+  transform(value: any): boolean {
+    return typeof value === 'number' && !isNaN(value)
+  }
+}