camera_id not exposed through launchfiles (zedx, zedxm)

[bmegli]

Preliminary Checks

• [X] This issue is not a duplicate. Before opening a new issue, please search existing issues.
• [X] This issue is not a question, bug report, or anything other than a feature request directly related to this project.

Proposal

• zedx.launch
• zedxm.launch

Should expose camera_id and pass it down to zed_camera.launch.xml

This is necessary for multi GMSL2 camera scenario.

Use-Case

Working with multiple GMSL2 cameras:

roslaunch zed_wrapper zedx.launch camera_id:=0

roslaunch zed_wrapper zedxm.launch camera_id:=1

Anything else?

The fix is straightforward.

I am already using and I may supply pull request (not worth it probably for such simple change).

[Myzhar]

@bmegli the parameter is now exposed: https://github.com/stereolabs/zed-ros-wrapper/blob/master/zed_wrapper/launch/zedx.launch#L28

Let me know if it works as expected

[bmegli]

Thank you @Myzhar

Now I can run multiple GMSL2 cameras on single system