fix: handle being quit through activity-monitor (closes #1622)

src/main.swift

@@ -1,3 +1,12 @@
 import AppKit
+import Darwin
+
+// if the app is quit/force-quit from Activity Monitor, it will receive SIGTERM and applicationWillTerminate won't be called
+// we intercept SIGTERM so we can reset the native command-tab shortcut
+signal(SIGTERM) { _ in
+    // symbolic hotkeys state persist after the app is quit; we restore this shortcut before quitting
+    setNativeCommandTabEnabled(true)
+    exit(0)
+}
 
 App.shared.run()

src/ui/App.swift

@@ -4,7 +4,6 @@ import LetsMove
 import ShortcutRecorder
 import AppCenterCrashes
 
-
 let cgsMainConnectionId = CGSMainConnectionID()
 
 var activity = ProcessInfo.processInfo.beginActivity(options: .userInitiatedAllowingIdleSystemSleep,