libignition-gazebo[2-6]-dev debs should not be required to run simulation using ign

[azeey]

After just installing libignition-gazebo<ver>, running ign gazebo doesn't work. I would have expected to install *-dev packages only if I'm compiling, but it looks like it's required even for running simulation. For example, after only installing libignition-gazebo4, ign shows the following:

The 'ign' command provides a command line interface to the ignition tools.

  ign <command> [options]

List of available commands:

  help:          Print this help text.
  sdf:           Utilities for SDF files.
  plugin:        Print information about plugins.

but after installing libignition-gazebo4-dev it shows:

The 'ign' command provides a command line interface to the ignition tools.

  ign <command> [options]

List of available commands:

  help:          Print this help text.
  log:           Record or playback topics.
  fuel:          Manage simulation resources.
  topic:         Print information about topics.
  service:       Print information about services.
  sdf:           Utilities for SDF files.
  gui:           Launch graphical interfaces.
  msg:           Print information about messages.
  plugin:        Print information about plugins.
  gazebo:        Run and manage Gazebo.
  model:         Print information about models.

[scpeters]

@j-rivero should we install the cli command metadata with the lib* packages instead of lib*-dev?

[chapulina]

Besides moving the installed files, I believe we should also be moving the dependency on libignition-tools-dev / ignition-tools to the non-dev package. Right now, the dev packages are pulling tools, and I think they shouldn't be.

https://github.com/gazebo-release/sdformat12-release/blob/906cc13e287120db3be1be089b0ceefa7bcbec5e/jammy/debian/control#L49

I ran into this while working on gazebosim/ros_gz#265. The ros-rolling-sdformat-urdf packages pulls libsdformat12-dev, which is pulling libignition-tools-dev. This makes it not possible to install it alongside gz-garden, which brings gz-tools2.