[QNN EP] test coverage for MaxPool (#15904)
### Description
Added MaxPool tests to show the issues with MaxPool and also provide
test coverage
The following tests are currently Failing:
./onnxruntime_test_all --gtest_filter=*.TestMaxPool*
[ FAILED ] 5 tests, listed below:
[ FAILED ] QnnCPUBackendTests.TestMaxPool_Ceil
[ FAILED ] QnnCPUBackendTests.TestMaxPool_Large_Input2_Ceil
[ FAILED ] QnnHTPBackendTests.TestMaxPool_Large_Input_HTP_u8
[ FAILED ] QnnHTPBackendTests.TestMaxPool_Large_Input2_HTP_u8
[ FAILED ] QnnHTPBackendTests.TestMaxPool_Large_Input2_Ceil_HTP_u8
### Motivation and Context
<!-- - Why is this change required? What problem does it solve?
Provide test coverage for MaxPool and debug model related issues.
