delete one useless cmakelists

fixed the Dockfile issue and updated the readme with Docker Ros2 commands

modified the cmake for better path

add the dockerfile for ros2 and modify the roslaunch for better path accordingly

modify the readme

upload a ros2 bag for cow and lady

update the link for temporary dataset

modified the readme a bit

now we support the ros2 version as well, modified the readme

add ros2 version for VDB-GPDF

add ros2 version for VDB-GPDF

fixed a few typos

re-structure the workspace better, add important todo in the code to further make vdb_gpdf layer pure without ros handle

first commit

Update README.md