Add adversarial tests module for client security testing

src/proxy/client.rs

@@ -1040,5 +1040,7 @@ impl RunningClientHandler {
 #[cfg(test)]
 #[path = "client_security_tests.rs"]
 mod security_tests;
+
+#[cfg(test)]
 #[path = "client_adversarial_tests.rs"]
 mod adversarial_tests;