Change color of tray icon when there are unread notifications

[dkniffin]

No unread notifications:

At least one unread notification:

Related to #90

[dkniffin]

I haven't tested this on anything except mac. Not sure if that matters for merging this or not.

[brunolemos]

This is great @dkniffin, thanks!

[brunolemos]

I pushed a commit to remove the hook from the reduce, because that breaks one of the hooks rules and causes this error: 6479650

[dkniffin]

@brunolemos Mind pushing another release soon? I'd like to start using this without having to run the app locally

[brunolemos]

@dkniffin I’m trying to get one more thing together in the same release, but you can run yarn workspace @devhub/desktop build that it will create a production app exactly the same as the one I’d release.