Third Party Widgets Support

[Pezmc]

Description

Updates the example third party widget to:

• Build using Vite (+rollup) for speed improvements and to be consistent with dashboard
• Output a UMD file that does not include a copy of Vue
• Also adds linting and handy package scripts

Related Issue(s)

Part of the work for https://github.com/FlowFuse/node-red-dashboard/issues/307 Also converted to Vite as per https://github.com/FlowFuse/node-red-dashboard/pull/336

Checklist

• [ ] I have read the contribution guidelines
• [ ] Suitable unit/system level tests have been added and they pass
• [ ] Documentation has been updated
  • [ ] Upgrade instructions
  • [ ] Configuration details
  • [ ] Concepts
• [ ] Changes flowforge.yml?
  • [ ] Issue/PR raised on FlowFuse/helm to update ConfigMap Template
  • [ ] Issue/PR raised on FlowFuse/CloudProject to update values for Staging/Production

Labels

• [ ] Backport needed? -> add the backport label
• [ ] Includes a DB migration? -> add the area:migration label

[Pezmc]

@joepavitt The docs will need updating, but I'm handing the torch to you to wrap this example up as you see fit. I'd like to strip back as much of the "old approach" as possible to streamline how it looks for developers.

[joepavitt]

Agree entirely, will take over, thanks so much Pez.

Documentation will get an overhaul.

[joepavitt]

Updated UI Example Node:

https://github.com/FlowFuse/node-red-dashboard-2-ui-example/assets/99246719/397b013e-4a91-44b7-b378-e1cb28b03a43