Fix tools compilation
Fix tools compilation

Dear ImGui contains a file with a space in the filename
(`imgui/examples/example_apple_metal/iOS/Launch Screen.storyboard`),
which cause make to fail with the following error message:

    make: *** No rule to make target '../tools/untech-editor/src//vendor/imgui/examples/example_apple_metal/iOS/Launch', needed by 'untech-editor'.  Stop.

The new rules execute `make --question` to test if untech-editor or bass
needs recompiling.

undisbeliever/untech-engine