feat(lambda-rs): Add 2D physics world for managing physics in 2D envi… #474

Job	Run time
Build lambda-rs on ubuntu-latest with features lambda-rs/with-vulkan,lambda-rs/audio-output-device.	2m 46s
Build lambda-rs on windows-latest with features lambda-rs/with-dx12.	4m 46s
Build lambda-rs on ubuntu-latest with features lambda-rs/with-vulkan.	2m 37s
Build lambda-rs on macos-latest with features lambda-rs/with-metal.	4m 35s
Build lambda-rs on windows-latest with features lambda-rs/with-dx12,lambda-rs/audio-output-device.	7m 25s
Build lambda-rs on macos-latest with features lambda-rs/with-metal,lambda-rs/audio-output-device.	2m 55s
	25m 4s

Provide feedback