feat: Initialize Zastava Webhook service with TLS and Authority authentication

- Added Program.cs to set up the web application with Serilog for logging, health check endpoints, and a placeholder admission endpoint.
- Configured Kestrel server to use TLS 1.3 and handle client certificates appropriately.
- Created StellaOps.Zastava.Webhook.csproj with necessary dependencies including Serilog and Polly.
- Documented tasks in TASKS.md for the Zastava Webhook project, outlining current work and exit criteria for each task.

bench/Scanner.Analyzers/baseline.csv

@@ -0,0 +1,3 @@
+scenario,iterations,sample_count,mean_ms,p95_ms,max_ms
+node_monorepo_walk,5,4,233.9428,319.8564,344.4611
+python_site_packages_walk,5,3,72.9166,74.8970,74.9884