Feature request: Support auto-starting on login

[NoahAndrews]

Have you searched existing Github issues to see if someone has already requested this feature?
Yes

Is your feature request related to a problem? Please describe.
I use heynote in tray mode with a hotkey configured. The hotkey doesn't work until I start heynote manually.

Describe the solution you'd like
Ideally, heynote would have a setting for auto-launch on Windows and macOS, which would be backed by this electron API

Describe alternatives you've considered
Individual users can set up whatever auto-launch functionality is provided by their OS