fix: awsim_labs velodyne_top_base_link yaw value

[mozhoku]

Description

Fix AWSIM Labs sensor kit, "velodyne_top_base_link" yaw value.

Reason for this change:

When we are importing vehicle sensor config that generated from the Autoware to the Unity with our Dynamic Sensor Placement tool the vehicle localizes with a 90 degree error.
To prevent this, I've changed velodyne_top_base_link yaw value to "0". Since it shouldn't have a rotation difference from the "sensor_kit_base_link"

Related Links

• Wrong localization orientation in Autoware AWSIM-Labs#79
• fix: wrong localization in autoware AWSIM-Labs#81

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[mozhoku]

After looking into this with @xmfcx he noticed that top lidars Frame ID is "sensor_kit_base_link". We will change this ID to top lidars base_link in the vehicle prefab. Closing this PR.