Use win lean and mean to fix WinSock include issue

CMakeLists.txt

@@ -454,6 +454,7 @@ if(APPLE)
     target_link_libraries (nheko ${NHEKO_LIBS} Qt5::MacExtras)
 elseif(WIN32)
     add_executable (nheko ${OS_BUNDLE} ${ICON_FILE} ${NHEKO_DEPS})
+    target_compile_definitions(nheko PRIVATE WIN32_LEAN_AND_MEAN)
     target_link_libraries (nheko ${NTDLIB} ${NHEKO_LIBS} Qt5::WinMain)
 else()
     add_executable (nheko ${OS_BUNDLE} ${NHEKO_DEPS})