[client,relay] Add QUIC support (#2962)

relay/tls/client_dev.go

@@ -0,0 +1,12 @@
+//go:build devcert
+
+package tls
+
+import "crypto/tls"
+
+func ClientQUICTLSConfig() *tls.Config {
+	return &tls.Config{
+		InsecureSkipVerify: true,             // Debug mode allows insecure connections
+		NextProtos:         []string{nbalpn}, // Ensure this matches the server's ALPN
+	}
+}