Improve CI triggers and add ROS 2 C++ node validation

[jonyMarino]

Fixes: N/A

About

This PR improves the GitHub Actions workflows by limiting each workflow to relevant source changes and adding CI coverage for the ROS 2 C++ node.

ClickUp task: https://app.clickup.com/t/90131502978/86ajh9j92

Main changes:

• Add a ROS 2 Humble job that builds projectairsim_ros2_cpp and runs its unit tests.
• Integrate the ROS 2 job into the existing C++ client workflow.
• Detect C++ client and ROS 2 changes independently to avoid unnecessary jobs.
• Run the C++ client workflow for its actual core_sim and packaging dependencies.
• Restrict the documentation workflow to documentation and Python autodoc changes.
• Restrict Windows and Linux SimLibs workflows to relevant components.
• Restrict the self-hosted integration workflow to simulator, Unreal, and Python client changes.
• Rename the Linux SimLibs workflow from Debug to Release to match the targets it executes.
• Run Linux SimLibs Release tests on Ubuntu 22.04.
• Use setup_linux_dev_tools.sh to prepare the Linux SimLibs environment.
• Preserve manual workflow execution through workflow_dispatch.

How Has This Been Tested?

• Parsed all modified workflow files successfully as YAML.
• Ran git diff --check successfully.
• Verified workflow path filters against the build scripts and CMake dependencies.
• Verified that the ROS 2 job targets ROS 2 Humble on Ubuntu 22.04 and reports unit test failures through colcon.
• Verified that the Linux SimLibs workflow uses the repository development setup script.

The workflows themselves require GitHub-hosted or self-hosted runner environments and were not executed locally.

Screenshots and videos (if appropriate):

N/A