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

[mergify]

This is an automatic backport of pull request #47 done by Mergify.
Cherry-pick of e5a8c85 has failed:

On branch mergify/bp/humble/pr-47
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Unmerged paths:
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	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")

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[VinDp]

Related to #128 and #930