(build): ubuntu 21.04 support
Description
ubuntu 21.04 support
Proposal
- use VTK9,
- remove PCL usage
- change CI docker
see also https://git.ircad.fr/sight/sight-ci-docker/-/merge_requests/3
ubuntu 21.04 support
see also https://git.ircad.fr/sight/sight-ci-docker/-/merge_requests/3