[feature request] Ability to run multiple instances of ElectronIM, each with their own tab groups

[TheBeardOfTruth]

It would be nice to be able to define multiple windows in addition to tabs, each with their own tabs. Ideally with the ability to close/reopen them independently.

I could not figure out any way to do this as the software currently functions, might be possibly by abusing snap or docker instances but I do not wish to pursue that method.