WPI Aladdin-1000 Pump - Device ID should be Master/Slave rather than int.

As an instrument scientist I would like my WPI Aladdin-1000 Pump to be addressed using Master/Slave terminology rather than an integer (e.g., 01, 02). This will match the labelling on the devices themselves.

#### Acceptance criteria

- [ ] The pump can be addressed using Master/Slave terminology at the record level

#### Additional information

- By default the pumps in networked mode auto-assign an address 00, 01, 02,... however these can be rebound. We should think carefully about how we handle this.