macOS Improvments

[SABRE1982]

Is your feature request related to a problem? Please describe.

Adding Localsend to macOS login items starts the app fully, it would be great to have it auto-minimise to the menu bar. Also, if you want to share an item, you need to open the app instead of selecting from the share picker.

Describe the solution you'd like

Start app on login with an option to auto minimise to the menubar. Add Localsend extension so that it can be added to the macOS share picker.

Describe alternatives you've considered

I haven't considered any alternatives.

Additional context

No response