Porting from bevy 0.16 to bevy 0.18

Porting to bevy 0.18 ## Changes - Modified the outline shader to use group 1 for the INSTANCE_BATCH_SIZE. - Modified the outline pipeline creation to use the group 1 for skinned meshes and group 2 for isntancing. That's because the skinning mesh group was moved to 2 instead of 1. - Using BindGroupLayoutDescriptor instead of BindGroupLayout in the pipeline creation. Bevy is moving away from keeping gpu resources on the cpu side. - Fixed all the examples to work with the new flow in bevy 0.18