✨ Notify user if their macOS version is no longer supported

[mrkai77]

• Loop will now show the user that their macOS version is no longer supported if the next update requires a newer version of macOS.
• The update window will no longer present it self as soon as Loop detects that an update is available. Instead:
  1. Loop checks for updates every 6 hours (same as before)
  2. If an update is available, a flag called shouldAutoPresentUpdateWindow is enabled. Additionally, another 6 hour timer is set.
     • If the second 6 hour timer fires, then the update window will present itself.
     • If Loop is used while the shouldAutoPresentUpdateWindow flag is enabled, the update window will prefer to present itself right after the user has finished looping.