Let execution fall back to CPU EP if Compile of a partition on current EP fails

[guoyu-wang]

Description: Let execution fall back to CPU EP if Compile of a partition on current EP fails

Motivation and Context

• This is a feature request from 1p customer
• When EP::Compile fails, currently we will fail the entire execution, add a way to let the particular partition which fails the EP::Compile fall back to next EP
• This is only valid for EP using FilteredGraphViewer for now, to be specific, NNAPI and CoreML EP, all other EP will not be affected by this change
• This logic only works for using ORT format for mobile scenario, onnx model will not be affected by this change
• The user scenario is, NNAPI EP gives correct Capabilities for all the devices, if user want to restrict use certain devices (such as GPU), you can only get the error when you compile the NNAPI model if this is not possible

[jywu-msft]

This is nice. Let's see how we can apply the learnings here to other EP's besides the ones for mobile scenarios.
+@HectorSVC , +@stevenlix

[skottmckay]