qtshadertools(0.2.5): install Qt6ShaderToolsMacros.cmake

cmake install skipped this 405-line macros file that defines
qt_internal_add_shaders/qt6_add_shaders. Without it, downstream Qt
modules (qtdeclarative) fail at cmake configure with 'Unknown CMake
command qt_internal_add_shaders'.

local/recipes/qt/qtshadertools/recipe.toml

@@ -278,6 +278,11 @@ PY
 
 cmake --install . --prefix "${COOKBOOK_STAGE}/usr"
 
+cp -f "${COOKBOOK_SOURCE}/tools/qsb/Qt6ShaderToolsMacros.cmake" \
+   "${COOKBOOK_STAGE}/usr/lib/cmake/Qt6ShaderTools/Qt6ShaderToolsMacros.cmake" 2>/dev/null || true
+cp -f "${COOKBOOK_SOURCE}/tools/qsb/Qt6ShaderToolsMacros.cmake" \
+   "${HOST_BUILD}/lib/cmake/Qt6ShaderTools/Qt6ShaderToolsMacros.cmake" 2>/dev/null || true
+
 for lib in lib/libQt6*.so*; do
     [ -f "${lib}" ] && cp -an "${lib}" "${COOKBOOK_STAGE}/usr/lib/"
 done