Support multiple nodes ina s ingle package

### Current Behavior

https://discourse.nodered.org/t/multiple-custom-third-party-nodes/92939/8

### Expected Behavior

_No response_

### Steps To Reproduce

_No response_

### Environment

- FlowFuse version:
- Node.js version:
- npm version:
- Platform/OS:
- Browser:


### Linked Customers

- Customer name and/or link to HubSpot contact
