AutoSelect EP Infrastructure Part 2.

[skottmckay]

Description

NOTE: Moving out of Draft state so the CIs run.

Diffs are against #24430 and will be a follow-up PR once that is checked in.

Proposed changes. Can split out the 3 main areas if it's easier/quicker to review.
Assumption: We want all these changes. Please feel free to disagree with some/all and to suggest alternatives.

Update SessionOptionsAppendExecutionProvider_V2 to make OrtEpDevices as input to support all known scenarios.

• supports needing to pick an EP that supports multiple devices to run on a specific device
  • e.g. WebGPU could run on discrete or integrated GPU and we want to register it for one
• supports needing to pick an EP to run on multiple devices it supports
  • e.g. OpenVINO could be some combination of CPU/GPU/NPU. not necessarily all. not necessarily one.
• update EpFactoryInternal to support multiple devices

Re-work setup for provider bridge EPs being registered.

• removes all hardcoding of EP name to identify provider bridge EP
• add CreateEpFactories/ReleaseEpFactory to provider bridge EP
• add CreateIExecutionProvider to Provider
• add implementation of the pieces that are now on the provider bridge side to the CUDA EP.
• wire up EpLibraryProviderBridge to use new setup

Add enhance device discovery

• try and find/add more meaningful data so there's always a vendor name and description
• add some other arbitrary metadata. TBD what we really want/need
• I am really just fumbling my way around here to see what's possible. Happy to have all of this replaced with a better approach.

Minor cleanups

• use uint32_t for vendor_id and device_id as that's the real type
• rename bus_id to device_id as that matches the fields in the hardware id we're reading from
  • the new device discovery can lookup BusNumber and add to the metadata which makes bus_id confusing
  • open to suggestions on naming. we don't have a field that represents 'unique id' (not sure we need one). 'device_id' could potentially be confused as being a unique id for the device.

Motivation and Context

[skottmckay]

Merged into #24430