implement save request on OSX, add Quick Look extentions

PanoPainter/AppDelegate.m

@@ -10,6 +10,22 @@
 #import "GameViewController.h"
 #include "app.h"
 
+void global_exception_handler(NSException* e)
+{
+    if (App::I.canvas && App::I.canvas->m_canvas)
+        App::I.canvas->m_canvas->project_save_thread(App::I.data_path + "/recovery.pano");
+    
+    std::terminate();
+}
+
+void global_signal_handler(int e)
+{
+    if (App::I.canvas && App::I.canvas->m_canvas)
+        App::I.canvas->m_canvas->project_save_thread(App::I.data_path + "/recovery.pano");
+
+    std::terminate();
+}
+
 @interface AppDelegate () {
     GameViewController* view;
 }
@@ -18,9 +34,15 @@
 
 @implementation AppDelegate
 
+- (BOOL)application:(UIApplication *)app openURL:(NSURL *)url options:(NSDictionary<UIApplicationOpenURLOptionsKey,id> *)options
+{
+    App::I.canvas->m_canvas->project_open([url fileSystemRepresentation]);
+    return true;
+}
 
 - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
     // Override point for customization after application launch.
+    NSSetUncaughtExceptionHandler(&global_exception_handler);
     view = (GameViewController*)self.window.rootViewController;
     return YES;
 }