Utilize native printer web interfaces

[additivepros]

Add a tab somewhere in the interface that allows us to access the native web interfaces of various systems.

Mainsail, Fluid, OctoPrint, Repetier, Duet Web Control all come to mind. This would be similar to how it's implemented in Orcaslicer and provide much more seamless integration experience. Uploading files and being able to immediately hit that tab to monitor print progress or control the printer from there would be awesome.

This would be a low effort implementation as it'd only require opening a native browser page in a tab, and somewhere to store the credentials for each type of interface.