BaseTester: support plugin EPs with compiled nodes and registered kernels #8631

Job	Run time
2. Build Minimal (Exceptions Disabled)	10m 28s
1. Build Full ORT and Generate ORT Files	17m 10s
5. Build Extended Minimal	10m 36s
6b. Build Minimal (No Optional Features)	7m 37s
4. Build Minimal (Globally Allowed Types)	8m 36s
6a. Build Regular (No Optional Features)	12m 37s
6c. Build Extended Minimal (No Optional Features)	7m 44s
3a. Build Minimal (Custom Ops)	8m 46s
7. Build Extended Minimal (Android NNAPI)	10m 4s
3b. Build Minimal (Type Reduction)	8m 36s
	1h 42m 14s

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