[CUDA EP Plugin] ResourceAcountant integration (#28028)
This pull request introduces several enhancements and refactorings to
the resource accounting and execution provider (EP) infrastructure, with
a focus on better support for plugin-based CUDA execution providers. The
most significant changes include the addition of type-erased arithmetic
for resource accounting, improved handling of resource budgets for
plugin EPs, and more robust device matching logic. These updates
increase maintainability, enforce stricter type safety, and ensure
correct resource tracking across both in-tree and plugin-based EPs.
**Resource accounting improvements:**
* Added type-erased arithmetic functions (`AddResourceCounts`,
`ResourceCountExceeds`, `FormatResourceCount`) for `ResourceCount` to
enforce exhaustive handling of variant types and improve type safety.
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* Refactored the `IResourceAccountant` interface: replaced
`ResetPendingWeights` with `ResetForNewPass`, which resets both the stop
flag and pending weights, and introduced a protected
`ResetPendingWeightsImpl` for subclass-specific cleanup.
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**Plugin CUDA EP and resource budget enforcement:**
* Added `kCudaPluginExecutionProvider` constant and updated logic to
ensure plugin EPs correctly map to their in-tree accountant counterparts
and are included in device matching and partitioning.
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* Updated plugin EP infrastructure to pass and utilize resource
accountant pointers, enabling host-side resource budget enforcement for
plugin EPs and ensuring correct node assignment.
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**Device matching and partitioning:**
* Improved device matching heuristics to consider both in-tree and
plugin CUDA EPs, and updated logic to prefer runtime device ordinals for
more reliable device selection.
Other minor changes include code style cleanups and additional includes
for completeness.
