Implement OrthographicCamera

[vincentmarchetti]

the manifesto code currently (at commit e71da4c , 24 May 2024) implements the PerspectiveCamera.

The OrthographicCamera is to be implemented as well.

These two camera types are defined in the draft 3d api at https://github.com/IIIF/3d/blob/main/temp-draft-4.md#cameras

The OrthographicCamera has a position as clarified in discussion: IIIF/api#2288

The fieldOfView of an OrthographicCamera is a linear dimension shown marking the vertical linear distance between top and bottom of the view. See issue IIIF/api#2289

[vincentmarchetti]

Has been implemented in the kshell-dev branch. I am waiting for the npm deployment to be enabled on the main branch, then will merge orthographic camera through a pull request.

[vincentmarchetti]

the kshell-dev based pull request conflicted with npm deployment.
A new pull request with an OrthographicCamera implementation is at #9
awaiting review and fast-forward merge.

After this is done both kshell-dev and ortho-camera-pullreq branches will be deleted

[vincentmarchetti]

Pull request merged
kshell-dev and ortho-camera-pullreq branches deleted