fix(nebula_launch.py): make the generic launch file hand off to the correct vendor's launch file

[mojomex]

PR Type

• Improvement
• Bug Fix

Description

The nebula_launch.py file was long deprecated but also had incorrect/incomplete launch arguments for some vendors/sensors.
This PR re-writes this file such that it only explicitly handles the sensor_model argument, finds the corresponding vendor-specific launch file and hands off all remaining arguments to that file.
This way, backwards-compatibility is still ensured and future changes to vendor launch files will not necessitate updates to nebula_launch.py.

Support for containers is purpusefully dropped since the vendor launch files also do not support it anymore. This could be added back in in the future.

Review Procedure

• Try launching nebula_launch.py with only sensor_model as an argument.
• Try launching with vendor-specific arguments
• Try launching with a custom config_file in a different location than the default one (in nebula_ros/config)

Pre-Review Checklist for the PR Author

PR Author should check the checkboxes below when creating the PR.

• Assign PR to reviewer

Checklist for the PR Reviewer

Reviewers should check the checkboxes below before approval.

• Commits are properly organized and messages are according to the guideline
• (Optional) Unit tests have been written for new behavior
• PR title describes the changes

Post-Review Checklist for the PR Author

PR Author should check the checkboxes below before merging.

• All open points are addressed and tracked via issues or tickets

CI Checks

• Build and test for PR: Required to pass before the merge.

[knzo25]

Loved this !