cmake: add USES_TERMINAL to show cargo output

Otherwise the CMake output is just stuck at the step for however long the rust part takes to build.

Author: dario23

CMakeLists.txt

@@ -157,6 +157,7 @@ ${config_paths}
   add_custom_command(
     OUTPUT ${DUMMY_FILE}
     BYPRODUCTS ${RUST_LIBRARY} ${WRAPPER_FILE}
+    USES_TERMINAL
     COMMAND
       ${CMAKE_COMMAND} -E
       env BUILD_DIR=${CMAKE_CURRENT_BINARY_DIR}