Split Apple platform target and move platform state ownership

CMakeLists.txt

@@ -239,8 +239,6 @@ add_library(pp_platform_api STATIC
     src/platform_api/asset_file_load_policy.h
     src/platform_api/network_tls_policy.cpp
     src/platform_api/network_tls_policy.h
-    src/platform_apple/apple_platform_services.cpp
-    src/platform_apple/apple_platform_services.h
     src/platform_api/platform_policy.cpp
     src/platform_api/platform_policy.h
     src/platform_api/platform_services.cpp
@@ -255,6 +253,18 @@ target_link_libraries(pp_platform_api
     PRIVATE
         pp_project_warnings)
 
+add_library(pp_platform_apple STATIC
+    ${PP_PLATFORM_APPLE_SOURCES})
+target_include_directories(pp_platform_apple
+    PUBLIC
+        "${CMAKE_CURRENT_SOURCE_DIR}/src")
+target_link_libraries(pp_platform_apple
+    PUBLIC
+        pp_platform_api
+        pp_project_options
+    PRIVATE
+        pp_project_warnings)
+
 add_library(pp_app_core STATIC
     src/app_core/about_menu.h
     src/app_core/app_dialog.h
@@ -608,6 +618,9 @@ if(PP_BUILD_APP)
                 pp_project_options
             PRIVATE
                 pp_project_warnings)
+        if(APPLE)
+            target_link_libraries(panopainter_app PRIVATE pp_platform_apple)
+        endif()
         pp_add_version_generation(panopainter_app "$<IF:$<CONFIG:Debug>,debug,release>")
 
         add_library(pp_platform_windows OBJECT