Failed to upload documents in CI

[mmurooka]

Uploading of documentation in CI has failed after changes for ROS2 migration.
https://github.com/isri-aist/NMPC/actions/runs/13585964535/job/37980896553

The following can help to solve the problem.

• Migrate to Ros2 (upload documetation) TrajectoryCollection#4
• Improve uploading documentation TrajectoryCollection#5

(This is not an urgent matter)