[QNN EP] Add Support for ScatterND Op in QNN EP (#24592)
- Registered the ScatterND Op in QNN EP
- Created the op as part of the Simple Op Builder
- Added unit test to verify the Op runs on QNN
- Skipping ScatterND on QNN CPU (To Do)
### Description
Add ScatterND Op Support in QNN EP
### Motivation and Context
Performance improvement as ScatterND Op falls to ORT CPU due to missing
support
