refactor: mover .go de tipos Go a functions/{domain}/ para compilación unificada

Los archivos .go de tipos ahora viven junto a las funciones en functions/{domain}/
(mismo paquete Go), resolviendo errores de compilación por tipos no encontrados
(Option, Pair, Result, etc.). Los .md de metadata permanecen en types/{domain}/
con file_path actualizado a functions/. Se elimina types.go duplicado de infra.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

functions/cybersecurity/port_result.go

@@ -0,0 +1,24 @@
+package cybersecurity
+
+// PortResult is a sum type for TCP port scan results.
+type PortResult interface{ portResult() }
+
+// PortOpen indicates the port accepted a connection.
+type PortOpen struct {
+	Port    int
+	Banner  string
+}
+
+// PortClosed indicates the port refused the connection.
+type PortClosed struct {
+	Port int
+}
+
+// PortFiltered indicates the port did not respond (timeout).
+type PortFiltered struct {
+	Port int
+}
+
+func (PortOpen) portResult()     {}
+func (PortClosed) portResult()   {}
+func (PortFiltered) portResult() {}