Add UR30 as a new option to launch things (backport #47)

[mergify[bot]]

This is an automatic backport of pull request #47 done by Mergify. Cherry-pick of e5a8c8520d1cde3f4e9fb4f7ea06f4418ffb72bb has failed:

On branch mergify/bp/humble/pr-47
Your branch is up to date with 'origin/humble'.

You are currently cherry-picking commit e5a8c85.
  (fix conflicts and run "git cherry-pick --continue")
  (use "git cherry-pick --skip" to skip this patch)
  (use "git cherry-pick --abort" to cancel the cherry-pick operation)

Unmerged paths:
  (use "git add <file>..." to mark resolution)
    both modified:   ur_simulation_gazebo/launch/ur_sim_control.launch.py
    both modified:   ur_simulation_gazebo/launch/ur_sim_moveit.launch.py

no changes added to commit (use "git add" and/or "git commit -a")

To fix up this pull request, you can check it out locally. See documentation: https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/reviewing-changes-in-pull-requests/checking-out-pull-requests-locally

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[VinDp]

Related to #128 and #930