fix: app launched while in fullscreen shows first window

see https://github.com/lwouis/alt-tab-macos/pull/114#issuecomment-576384795

alt-tab-macos/logic/Applications.swift

@@ -5,6 +5,13 @@ class Applications {
     static var list = [Application]()
     static var appsObserver = RunningApplicationsObserver()
 
+    static func observeNewWindows() {
+        for app in list {
+            guard app.runningApplication.isFinishedLaunching else { continue }
+            app.observeNewWindows()
+        }
+    }
+
     static func initialDiscovery() {
         addInitialRunningApplications()
         observeRunningApplications()
@@ -31,10 +38,7 @@ class Applications {
         }
         if windows.count > 0 {
             CGSAddWindowsToSpaces(cgsMainConnectionId, windows as NSArray, [Spaces.currentSpaceId])
-            for app in list {
-                guard app.runningApplication.isFinishedLaunching else { continue }
-                app.observeNewWindows()
-            }
+            Applications.observeNewWindows()
             Windows.sortByLevel()
             CGSRemoveWindowsFromSpaces(cgsMainConnectionId, windows as NSArray, [Spaces.currentSpaceId])
             return

alt-tab-macos/logic/Spaces.swift

@@ -10,6 +10,7 @@ class Spaces {
     static func observeSpaceChanges() {
         NSWorkspace.shared.notificationCenter.addObserver(forName: NSWorkspace.activeSpaceDidChangeNotification, object: nil, queue: nil, using: { _ in
             updateCurrentSpace()
+            Applications.observeNewWindows()
             let app = App.shared as! App
             guard app.appIsBeingUsed else { return }
             app.reopenUi()