Optimize Asset Gpu Data Transfer

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This gives a nice boost when most assets dont change, with a very minor regression when many assets are changing.

• Asset render resource bindings are now directly shared between all entities that reference the asset
• We now only update asset render resources when they have changed
• Reduced hashing in a number of areas

Bevymark Results (10,000 static entities)

This got a nice boost because the entity textures don't change.

Before

Diagnostics:
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frame_time                                                       : 0.018833    (avg 0.018690)
fps                                                              : 57.069353   (avg 55.020985)

After

Diagnostics:
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frame_time                                                       : 0.013772    (avg 0.014135)
fps                                                              : 70.948812   (avg 71.042812)

Spawner Example Results (10,000 moving entities with individual changing textures)

This has regressed slightly due to the added change detection.

Before

Diagnostics:
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frame_time                                                       : 0.038409    (avg 0.037628)
fps                                                              : 24.700086   (avg 25.714331)

After

Diagnostics:
---------------------------------------------------------------------------------------------
frame_time                                                       : 0.039960    (avg 0.039978)
fps                                                              : 25.022038   (avg 25.050537)