Feature/Request DLL dev mode / hot reload

[Duffscs]

That's really great work.
It would be cool to be able to change the dll during execution. Using a filewatcher for example, unload the dll and load the new one instead? Activated via a debug parameter in main, this would avoid relaunching tauri every time you make a change in the backend.

[plainionist]

Thank u!
I like your suggestion. it would certainly improve development experience. I need to investigate whether and how unloading of plugin assemblies would work.