Add speed and delay to camera auto orbit config/props

[ryantrem]

This PR adds the ability to set the camera auto orbit delay and speed (as discussed here: https://forum.babylonjs.com/t/babylon-viewer-v2/54317/33).

After some discussion with @sebavan we're trying out grouping related properties together at the JS layer to reduce API surface area explosion, so I applied this pattern to tone mapping + contrast + exposure as well.

[bjsplat]

Please make sure to label your PR with "bug", "new feature" or "breaking change" label(s).
To prevent this PR from going to the changelog marked it with the "skip changelog" label.

[bjsplat]

Snapshot stored with reference name:
refs/pull/15789/merge

Test environment:
https://snapshots-cvgtc2eugrd3cgfd.z01.azurefd.net/refs/pull/15789/merge/index.html

To test a playground add it to the URL, for example:

https://snapshots-cvgtc2eugrd3cgfd.z01.azurefd.net/refs/pull/15789/merge/index.html#WGZLGJ#4600

Links to test babylon tools with this snapshot:

https://playground.babylonjs.com/?snapshot=refs/pull/15789/merge
https://sandbox.babylonjs.com/?snapshot=refs/pull/15789/merge
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To test the snapshot in the playground with a playground ID add it after the snapshot query string:

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[bjsplat]

Visualization tests for WebGPU (Experimental)

https://snapshots-cvgtc2eugrd3cgfd.z01.azurefd.net/refs/pull/15789/merge/testResults/webgpuplaywright/index.html

[bjsplat]

WebGL2 visualization test reporter:

https://snapshots-cvgtc2eugrd3cgfd.z01.azurefd.net/refs/pull/15789/merge/testResults/webgl2playwright/index.html

[RaananW]

Putting this PR in draft

Did you mean to enable auto-merge?

[ryantrem]

Putting this PR in draft

Did you mean to enable auto-merge?

Yes I just forgot to update the description when I took it out of draft. The changes here are based on some feedback from @sebavan.