[EP ABI] Add ability to drop constant initializers for fused nodes specified in GetCapability

[adrianlizarraga]

Description

• Add ability to drop constant initializers for fused nodes specified in GetCapability.
• Rework how an EP specifies nodes that should be fused into one node within GetCapability.
  • Instead of passing the set of nodes as arguments to GraphSupportInfo_AddNodesToFuse(), the EP creates an OrtNodeFusionOptions object to specify the nodes and other relevant options. This makes it easier to extend the API in the future since we can't add more parameters to an existing function, but we can add more functions that modify an options object.

Motivation and Context

Add more functionality missing from GetCapability() in the EP ABI.

[chilo-ms]

Another request that EP might want is to create the fused node's id hashed from not only graph_viewer but also other info, ex: TRT version.
The case for TRT is to distinguish engines built from same OrtGraph with different version of TRT libraries. The workflow is TRT EP provides the id to ORT and gets the fused node's name and assign that name for the engine cache file, and next time when running the new inference, it can search for the cache with the name.

OrtNodeFusionOptions can address this issue by letting EP provide its own hashed id.

[skottmckay]