Port BIFs

[KronicDeth]

• [x] is_port/1
• [ ] list_to_port/1
• [ ] open_port/2
• [ ] port_call/2
• [ ] port_call/3
• [ ] port_close/1
• [ ] port_command/2
• [ ] port_command/3
• [ ] port_connect/2
• [ ] port_control/3
• [ ] port_get_data/1
• [ ] port_info/1
• [ ] port_info/2
• [ ] port_set_data/2
• [ ] port_to_list/1
• [ ] ports/0