feat: add restart and reload menu items on macOS

[BlankParticle]

What does this PR do?

I was getting annoyed by having to quit and restart the app everytime

Added 2 menu items for Reloading the webview (no app/server restart) and Restarting the full app (+server)

Closes #9213

How did you verify your code works?

The buttons do what they are supposed to do