Support wide-angle cameras in ogre2

[scpeters]

Desired behavior

Support for wide-angle cameras was ported from gazebo-classic to gz-rendering's ogre (1.x) component in #490. This ticket requests that it also be ported to the ogre2 (2.x) component.

Alternatives considered

Implementation suggestion

Additional context

[darksylinc]

As I'm porting this to OgreWideAngleCamera to Ogre2; I noticed OgreWideAngleCamera::Implementation::envCubeMapTextureFormat doesn't appear to be ever initialized.

That looks like a bug?

@iche033

[scpeters]

As I'm porting this to OgreWideAngleCamera to Ogre2; I noticed OgreWideAngleCamera::Implementation::envCubeMapTextureFormat doesn't appear to be ever initialized.

That looks like a bug?

@iche033

that looks like a bug to me

[iche033]

that looks like a bug to me

+1.

[darksylinc]

This ticket can be closed (I can't do it). PR #733 implemented this feature.