Append morai_msgs package related to testing codes about checking simulator compatibility

[Soohyeok-Park]

Checklist

• I've read the contribution guidelines.
• I've searched other issues and no duplicate issues were found.
• I've agreed with the maintainers that I can plan this task.

Description

The pull request (PR link) has been approved but it fails to proceed due to the dependency of the package, morai_msgs.
At first, the morai_msgs package was in [autoware.universe/tools/simulator_test/]. but in the simulation working group, it was decided to remove it and then, append it to autoware.repos to maintain consistency with other packages.

Purpose

Since the pull request (PR link) has been approved but failed to be built, the morai_msgs package would be added to autoware.repos for further steps.

Possible approaches

None.

Definition of done

the morai_msgs package is listed on the autoware.repos.

[xmfcx]

Closing since:

• feat(morai_msgs): appending a message package for MORAI SIM: Drive  #2740
  is merged.

And it is still present:

autoware/autoware.repos

Lines 36 to 39 in c9c4546

	universe/external/morai_msgs:
	type: git
	url: https://github.com/MORAI-Autonomous/MORAI-ROS2_morai_msgs.git
	version: main