Performance improvements

[attackgoat]

Various internal pattern changes and optimizations found while testing. Not yet fully scoped, will expand.

• Support coarse image ownership tracking (whole/dual/dense, like access has single/dual/dense)
• Optimize both ownership and access patterns now that they have similar APIs
• Optimize solver with "same resource list" detection/re-use
• Skip barriers if possible (tried twice before, this needs many tests)
• Add resource-set API to make "bind my materials" faster
• Add threaded command buffer finalizer (disposer)

[attackgoat]

The "same resource list" optimization makes a big difference if the workload is "lots of materials and a smaller collection of program-related resources". This is a micro-bench of a very small section of the submission process but a good first target:

New Bench	Before	After
10 commands	55.9 us	5.6 us
11 commands	67.6 us	5.7 us
25 commands	158.2 us	9.1 us