feat(tap): Add explicit fail method to the Tap class for better test failure handling

ts/tapbundle.classes.tap.ts

@@ -160,6 +160,14 @@ export class Tap<T> {
   public threw(err: Error) {
     console.log(err);
   }
+
+  /**
+   * Explicitly fail the current test with a custom message
+   * @param message - The failure message to display
+   */
+  public fail(message: string = 'Test failed'): never {
+    throw new Error(message);
+  }
 }
 
 export let tap = new Tap();