Ray Tracing Pipeline: SBT fixes & refactor examples

[ComfyFluffy]

Changes to examples

• Use perspective_rh instead of perspective_rh_gl for camera in ray tracing examples.
• Refactor TLAS builder function in examples to take multiple instances.

Bugs fixed

• Incorrectly copying handles when shader groups do not follow a specific arrangement.
• Specify alignment when creating SBT buffers.

[Rua]

How are things going with this PR?

[ComfyFluffy]

Docs for trace_rays is not added yet. I think I will add them this week. Other modifications should be ready for review.

[marc0246]

I documented all the methods in #2625.

[ComfyFluffy]

I will migrate the changes based on #2625.

[ComfyFluffy]

New changes are ready for review. I can merge from master once #2625 is merged.

[marc0246]

Thank you for the fixes!

Please don't create dependencies between PRs when there's no need. I think what you wanted is for me to not get merge conflicts, but please don't worry yourself with that. I'm a seasoned veteran when it comes to merge conflicts. Focus on your PR containing only your commits unless someone asks you to consider a specific merge order or unless it's unavoidable.