Added link to Phantom Bridge docs (backport #6124)

[mergify]

Description

Adding a link to https://docs.phntm.io/bridge to Related Projects

Announcement

---

This is an automatic backport of pull request #6124 done by Mergify.

[mergify]

Cherry-pick of 7ce2811 has failed:

On branch mergify/bp/humble/pr-6124
Your branch is up to date with 'origin/humble'.

You are currently cherry-picking commit 7ce2811.
  (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:
	new file:   source/Related-Projects/Visualizing-Data-And-Teleoperating-With-Phantom-Bridge.rst

Unmerged paths:
  (use "git add <file>..." to mark resolution)
	both modified:   source/Related-Projects.rst

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

[github-actions]

HTML artifacts: https://github.com/ros2/ros2_documentation/actions/runs/20775557155/artifacts/5046902713.

To view the resulting site:

1. Click on the above link to download the artifacts archive
2. Extract it
3. Open html-artifacts-6139/index.html in your favorite browser