feat(app): specific WHOA_APP_DEBUG macro passed to resource file

src/app/CMakeLists.txt

@@ -3,6 +3,13 @@ if(WHOA_SYSTEM_WIN)
 
     add_executable(Whoa WIN32 ${PRIVATE_SOURCES})
 
+    if (CMAKE_BUILD_TYPE STREQUAL "Debug")
+        target_compile_definitions(Whoa
+            PRIVATE
+                -DWHOA_APP_DEBUG
+        )
+    endif ()
+
     target_link_libraries(Whoa
         PRIVATE
             client

src/app/win/Whoa.rc

@@ -1,6 +1,6 @@
 #pragma code_page(65001) // UTF-8
 
-#ifdef _DEBUG
+#ifdef WHOA_APP_DEBUG
 BlizzardIcon.ico ICON DISCARDABLE "debug/Whoa.ico"
 #else
 BlizzardIcon.ico ICON DISCARDABLE "release/Whoa.ico"