Replaced Bullet Physics with Jolt Physics!

[bryanedds]

Unfortunately, we weren't too happy with Bullet Physics as a 3D game physics platform, so we decided a while back to schedule its replacement with Jolt Physics, the 3D game physics engine that was used to ship Horizon: Zero Dawn. We still have a bit more optimization work and fine-grained testing to do, but everything appears to be working much more efficiently and smoothly with the new integration -

Additional changes -

• Changed ImNui template to be more amenable to its form factor's particulars.
• Implicit fix for Shadowed lights not rendering when loading from initial game mode until game advances. #925.
• Cleaned up dead portion of 2d render API.
• Working on joint breaking code.
• Attempting to get collision mask code working properly.

Full Changelog: v17.11.0...v18.0.0

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This discussion was created from the release Replaced Bullet Physics with Jolt Physics!.