rosidl_cli: Add type description support (backport #857)

[mergify]

This patch adds support for type description generation in rosidl_cli. It introduces a new hash command to generate type descriptions. It also ensures they are always present as part of the generate command even if the user doesn't provide them.

Addresses #808

Recommended Review Order

I recommend starting with the new hash generator in rosidl_cli/rosidl_cli/command/hash, which utilizes the extension defined in rosidl_generator_type_description/rosidl_generator_type_description/cli.py, and then progressing to the other changes.

Notes

• I verified that no updates were required in other parts of rosidl, such as rosidl_python and rosidl_typesupport.

---

This is an automatic backport of pull request #857 done by [Mergify](https://mergify.com).

[mergify]

Cherry-pick of c9a3084 has failed:

On branch mergify/bp/jazzy/pr-857
Your branch is up to date with 'origin/jazzy'.

You are currently cherry-picking commit c9a3084.
  (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:   rosidl_cli/rosidl_cli/command/generate/__init__.py
	new file:   rosidl_cli/rosidl_cli/command/hash/__init__.py
	new file:   rosidl_cli/rosidl_cli/command/hash/api.py
	new file:   rosidl_cli/rosidl_cli/command/hash/extensions.py
	modified:   rosidl_generator_c/rosidl_generator_c/cli.py
	modified:   rosidl_generator_cpp/rosidl_generator_cpp/cli.py
	modified:   rosidl_generator_type_description/rosidl_generator_type_description/__init__.py
	new file:   rosidl_generator_type_description/rosidl_generator_type_description/cli.py
	new file:   rosidl_generator_type_description/setup.cfg
	modified:   rosidl_typesupport_introspection_c/rosidl_typesupport_introspection_c/cli.py
	modified:   rosidl_typesupport_introspection_cpp/rosidl_typesupport_introspection_cpp/cli.py

Unmerged paths:
  (use "git add <file>..." to mark resolution)
	both modified:   rosidl_cli/rosidl_cli/cli.py
	both modified:   rosidl_cli/rosidl_cli/command/generate/api.py
	both modified:   rosidl_cli/rosidl_cli/command/generate/extensions.py
	both modified:   rosidl_cli/rosidl_cli/command/helpers.py

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

[fujitatomoya]

@hidmic can you resolve the conflicts?

[hidmic]

@fujitatomoya on it

[hidmic]

@fujitatomoya FYI #868, once merged this PR will pass CI.

[fujitatomoya]

Pulls: #867
Gist: https://gist.githubusercontent.com/fujitatomoya/7a8d6089390a9ff94c1d7081b9c066ef/raw/18b726a17ab41c7935e16b5c5a753d771904ae48/ros2.repos
BUILD args:
TEST args:
ROS Distro: jazzy
Job: ci_launcher
ci_launcher ran: https://ci.ros2.org/job/ci_launcher/15969

• Linux
• Linux-aarch64
• Linux-rhel
• Windows

[frneer]

@fujitatomoya FYI CI failed but it seems to me it's because of a Jenkins issue?
https://ci.ros2.org/job/ci_linux/23600/console#console-section-8

[fujitatomoya]

CI:

• Linux
• Linux-aarch64
• Linux-rhel
• Windows

[hidmic]

That Linux job failed again with a Jenkins fluke, but https://build.ros2.org/job/Jpr__rosidl__ubuntu_noble_amd64/11 still pointed me to a linter issue. See #870.

[fujitatomoya]

Pulls: #867
Gist: https://gist.githubusercontent.com/fujitatomoya/720300f60909356405f1d0b83e677c41/raw/18b726a17ab41c7935e16b5c5a753d771904ae48/ros2.repos
BUILD args:
TEST args:
ROS Distro: jazzy
Job: ci_launcher
ci_launcher ran: https://ci.ros2.org/job/ci_launcher/15989

• Linux
• Linux-aarch64
• Linux-rhel
• Windows

[hidmic]

Windows CI failed on a missing dependency.

@fujitatomoya once you squash merge, DCO failure should go away. The first commit is signed-off.

[fujitatomoya]

@hidmic @frneer merged to jazzy, thanks for checking on this.