[SDK-685] Feature/avatar preview element

[HarrisonHough]

SDK-685

Description

• Adds an avatar preview prefab which combines the avatar rotation script and a new CameraFocuser script (open to better name suggestions for camera script).
• I wasn't planning to change the way the Avatar rotation and input handling work but I think this new approach would be good as it enables devs to use other input sources (EG keyboard or controller) by using the IAvatarRotatorInput interface. But please give feedback on this

Component looks like this

Made a temp demo scene to make it easy to trigger the camera focus stuff if you check our the avatar-preview feature branch on Unity-SDK repo you can test for yourself

How to Test

• if you check our the avatar-preview feature branch on Unity-SDK repo you can test for yourself in scene located in TEMP folder

Checklist

• Tests written or updated for the changes.
• Documentation is updated.
• Changelog is updated.

[rYuuk]

🟢 Tested, it looks good. A small comment.

[rYuuk]

🟢 Thanks for making the change.