upgrade to ROS 2

[rursprung]

Kalibr still ships with docker images for ROS 1 kinetic and melodic, both of which have been end of life for a while now (2021 and 2023 respectively).
the only still supported ROS 1 version is noetic which will be EOL in May 2025 (i.e. 5 months from now!), see the ROS 1 distributions overview.

i'd suggest to:

1. drop support for kinetic & melodic (there's no sense in supporting ROS releases no longer supported by ROS itself)
2. upgrade Kalibr to the latest ROS 2 LTS (jazzy at the moment, see REP-2000 for an overview) and drop ROS 1 support completely
3. update the documentation to mention that ROS 1 users can always check out the old version of Kalibr using git (maybe create a git tag just before the upgrade to make this easier?)

[goldbattle]

This likely won't happen any time soon since the package is only being maintained for bug fixes. If someone does update to ROS2, please make a PR and I can look into figuring out how to merge that.