Add camera primitives benchmark

[CrazyRoka]

Objective

• Add performance benchmarks for camera primitives to track the efficiency of intersection tests.

Solution

• Created a new benchmark suite bevy_camera.

Testing

• Ran the benchmarks locally using cargo bench -p benches --bench camera -- --save-baseline main intersects_obb.

intersects_obb/sphere_intersects_obb
                        time:   [6.5819 ns 6.6022 ns 6.6255 ns]
intersects_obb/frustum_intersects_obb
                        time:   [14.919 ns 14.954 ns 14.991 ns]
intersects_obb/frustum_intersects_obb_fallback_identity
                        time:   [14.940 ns 14.965 ns 14.993 ns]
intersects_obb/frustum_intersects_obb_identity
                        time:   [6.8076 ns 6.8173 ns 6.8276 ns]