Inject Windows platform services

src/app.h

@@ -26,6 +26,10 @@
 #include "layout.h"
 #include "app_core/document_session.h"
 
+namespace pp::platform {
+class PlatformServices;
+}
+
 #if defined(__OBJC__) && defined(__IOS__)
 #import <Foundation/Foundation.h>
 #import "GameViewController.h"
@@ -156,6 +160,7 @@ public:
     float display_density = 1.f;
     float zoom = 1.f;
     int idle_ms = 100;
+    pp::platform::PlatformServices* platform_services_ = nullptr;
     
 #if defined(__IOS__) && defined(__OBJC__)
     GameViewController* ios_view;
@@ -184,6 +189,8 @@ public:
     void pick_dir(std::function<void(std::string path)> callback);
     void display_file(std::string path);
     void share_file(std::string path);
+    void set_platform_services(pp::platform::PlatformServices* services) noexcept;
+    [[nodiscard]] pp::platform::PlatformServices* platform_services() const noexcept;
     void showKeyboard();
     void hideKeyboard();
     void initLog();