Update CMakeLists.txt to use add_ros_isolated_launch_test (backport #926)

[mergify]

This change should hopefully fix #872.
Basically I am updating all the CMakeLists.txt files to use "add_ros_isolated_launch_test" for the launch tests as mentioned in
https://docs.ros.org/en/rolling/Tutorials/Intermediate/Testing/Integration.html

I ran the tests locally and they all passed.

---

This is an automatic backport of pull request #926 done by Mergify.

[mergify]

Cherry-pick of 8a3eb93 has failed:

On branch mergify/bp/humble/pr-926
Your branch is up to date with 'origin/humble'.

You are currently cherry-picking commit 8a3eb93.
  (fix conflicts and run "git cherry-pick --continue")
  (use "git cherry-pick --skip" to skip this patch)
  (use "git cherry-pick --abort" to cancel the cherry-pick operation)

Changes to be committed:
	modified:   example_1/CMakeLists.txt
	modified:   example_10/CMakeLists.txt
	modified:   example_11/CMakeLists.txt
	modified:   example_12/CMakeLists.txt
	modified:   example_14/CMakeLists.txt
	modified:   example_15/CMakeLists.txt
	modified:   example_2/CMakeLists.txt
	modified:   example_3/CMakeLists.txt
	modified:   example_4/CMakeLists.txt
	modified:   example_5/CMakeLists.txt
	modified:   example_6/CMakeLists.txt
	modified:   example_7/CMakeLists.txt
	modified:   example_8/CMakeLists.txt
	modified:   example_9/CMakeLists.txt

Unmerged paths:
  (use "git add/rm <file>..." as appropriate to mark resolution)
	both modified:   example_1/package.xml
	both modified:   example_10/package.xml
	both modified:   example_11/package.xml
	both modified:   example_12/package.xml
	both modified:   example_14/package.xml
	both modified:   example_15/package.xml
	deleted by us:   example_16/CMakeLists.txt
	deleted by us:   example_16/package.xml
	deleted by us:   example_17/CMakeLists.txt
	deleted by us:   example_17/package.xml
	both modified:   example_2/package.xml
	both modified:   example_3/package.xml
	both modified:   example_4/package.xml
	both modified:   example_5/package.xml
	both modified:   example_6/package.xml
	both modified:   example_7/package.xml
	both modified:   example_8/package.xml
	both modified:   example_9/package.xml

To fix up this pull request, you can check it out locally. See documentation: https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/reviewing-changes-in-pull-requests/checking-out-pull-requests-locally