Launch file duplication for each package

[matejstastny]

THT-397

Each robot package has it's own launch file that is the exact same as other ones, meaningless duplication, as this can be moved to a shared package. This is amplified even more by the new planned move from Gazebo to Genesis, where the only packages that are not shared are the urdf and the meshes.

[matejstastny]

This is implemented in the new Genesis migration, so it will get closed if we decide to merge that. We are not going with Genesis propably.