test(benchmarks): add C#/ASP.NET and TypeScript tasks

Six tasks with hidden checks: ASP.NET validation and 404 handling, C#
cancellation, and TypeScript overlap, deep merge, and debounce fixes, checked
with dotnet run and node --test.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

scripts/benchmarks/tasks/17-ts-booking-overlap/repo/package.json

@@ -0,0 +1,5 @@
+{
+  "name": "booking",
+  "type": "module",
+  "private": true
+}

scripts/benchmarks/tasks/17-ts-booking-overlap/repo/src/booking.ts

@@ -0,0 +1,8 @@
+export interface Booking {
+  start: number;
+  end: number;
+}
+
+export function overlaps(a: Booking, b: Booking): boolean {
+  return a.start <= b.end && b.start <= a.end;
+}