Update to build/install OGRE-2.2 in ignition ws

[mjcarroll]

An attempt to reproduce @j-rivero's Debian packaging in pure CMake.

Uses a colcon.pkg file for compatibility in ignition workspaces

Signed-off-by: Michael Carroll [email protected]

[j-rivero]

I have nothing against moving packaging code to the build system, has many advantages. The problem I see is that it will make more difficult to sync changes from upstream Ogre sources.

I believe that the PR is inspired by the Bazel, would it be very difficult to maintain the packaging changes there? @iche033 do you have any estimation if we will need to sync this fork to upstream sources in the future?

[mjcarroll]

This was mainly so that I could use the source build of OGRE 2.2 in a colcon workspace, since the debian packaging doesn't translate there. I think once the EGL features all land, the need for having a colcon-compatible repo is less necessary.

This can be dropped in favor of purely doing it in the debian packaging if that's more convenient.

[chapulina]

@mjcarroll , you mentioned this could be closed. Feel free to do it 👍