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...because we only really need to make sure arg changes are not skipped
upon a new pass, just changing the pipeline state has no effect on this.

Clarify the docs a bit as well.

...and even the entire draw call in some cases.

also start some minor optimizations to the imgui demo

Esp. for Metal where we now avoid superfluous set* for shader
resources.

Calling setGraphicsPipeline with the same srb multiple times in a row
in a frame should not lead to queuing BindDescriptorSets every time,
it should rather be optimized out just like the BindPipeline is.

There was a reason for defering (two passes update the same dyn.buffer
in the same frame, those can be accumulated instead of doing a full
DISCARD write twice) but the logic was broken due to optimizing out the
BindGraphicsPipeline in some cases. So keep it simple for now, the
multi-update in same frame case is discouraged anyway.

Drop CBOR and use comma-spearated text

and fix isFeatureSupported(DebugMarkers) logic

and fix Vulkan frame time calculation when timePeriod != 1.

...also write more sophisticated output in the profiler
stream when it comes to frame timings.

Every 120 frames atm. This becomes more interesting once
timestamp queries are implemented...

...and do some naming cleanup (currentFrame -> currentFrameSlot).

try to deal with the nonsense feature set api