Expose Near Clip and Far Clip parameters to the Python Bindings

[zalo]

Add optional args to set the NearClip and FarClip of the camera in the Offscreen Renderer.

Type

• Bug fix (non-breaking change which fixes an issue): Fixes #
• New feature (non-breaking change which adds functionality). Resolves #
• Breaking change (fix or feature that would cause existing functionality to not work as expected) Resolves #

Motivation, Context, and Description

Open3D Python doesn't currently expose a method for the OffscreenRenderer to convert depth units to absolute units, since all camera setting methods automatically normalize to the scene bounding box (without exposing those normalized values anywhere). This simple PR optionally exposes those options to enable depth to be output in absolute units.

Checklist:

• I have run python util/check_style.py --apply to apply Open3D code style
  to my code.
• This PR changes Open3D behavior or adds new functionality.
  • Both C++ (Doxygen) and Python (Sphinx / Google style) documentation is
    updated accordingly.
  • I have added or updated C++ and / or Python unit tests OR included test
    results (e.g. screenshots or numbers) here.
• I will follow up and update the code if CI fails.
• For fork PRs, I have selected Allow edits from maintainers.

[update-docs]

Thanks for submitting this pull request! The maintainers of this repository would appreciate if you could update the CHANGELOG.md based on your changes.