Added pinhole functionality for depth mapping

[JoKhannn]

No description provided.

[makeecat]

Please investigate the mismatch of 3d asset and rendered depth image pointcloud

[makeecat]

let pinhole_camera = rerun::Pinhole::from_focal_length_and_resolution(
        (width as f32 / 2.0, height as f32 / 2.0),
        (width as f32, height as f32),
    )
    .with_camera_xyz(rerun::components::ViewCoordinates::RDF)
    .with_resolution((width as f32, height as f32))
    .with_principal_point((width as f32 / 2.0, height as f32 / 2.0));

seems like from_fov_and_aspect_ratio has a bug? The above code works for me if I set the fov as 90 degrees and set the resolution as a square (ex. [128, 128].

I suggest we use the from_focal_length_resolution to setup the pinhole camera.