Export API_QUALIFIER symbols on Windows

This is required since by default symbols are not exported on Windows.

Author: jbsolomon

Graphics/Archiver/interface/ArchiverFactoryLoader.h

@@ -32,7 +32,7 @@
 // https://gcc.gnu.org/wiki/Visibility
 #    define API_QUALIFIER __attribute__((visibility("default")))
 #elif PLATFORM_WIN32 || PLATFORM_UNIVERSAL_WINDOWS
-#    define API_QUALIFIER
+#    define API_QUALIFIER __declspec(dllexport)
 #else
 #    error Unsupported platform
 #endif

Graphics/GraphicsEngineOpenGL/interface/EngineFactoryOpenGL.h

@@ -42,7 +42,7 @@
 // https://gcc.gnu.org/wiki/Visibility
 #    define API_QUALIFIER __attribute__((visibility("default")))
 #elif PLATFORM_WIN32
-#    define API_QUALIFIER
+#    define API_QUALIFIER __declspec(dllexport)
 #else
 #    error Unsupported platform
 #endif

Graphics/GraphicsEngineVulkan/interface/EngineFactoryVk.h

@@ -39,7 +39,7 @@
 // https://gcc.gnu.org/wiki/Visibility
 #    define API_QUALIFIER __attribute__((visibility("default")))
 #elif PLATFORM_WIN32
-#    define API_QUALIFIER
+#    define API_QUALIFIER __declspec(dllexport)
 #else
 #    error Unsupported platform
 #endif

Graphics/GraphicsEngineWebGPU/interface/EngineFactoryWebGPU.h

@@ -38,7 +38,7 @@
 // https://gcc.gnu.org/wiki/Visibility
 #    define API_QUALIFIER __attribute__((visibility("default")))
 #elif PLATFORM_WIN32
-#    define API_QUALIFIER
+#    define API_QUALIFIER __declspec(dllexport)
 #else
 #    error Unsupported platform
 #endif