cyw43: add perf HIL test.

tests/perf-server/perf-server.service

@@ -0,0 +1,16 @@
+[Unit]
+Description=perf-server
+After=network.target
+StartLimitIntervalSec=0
+
+[Service]
+Type=simple
+Restart=always
+RestartSec=1
+User=root
+ExecStart=/root/perf-server
+Environment=RUST_BACKTRACE=1
+Environment=RUST_LOG=info
+
+[Install]
+WantedBy=multi-user.target