Add partial onnx support for com.microsoft.SparseAttention

[music-dino]

• Partially resolves com.microsoft.SparseAttention is unsupported migraphx-benchmark/AMDMIGraphX#200
• Reference implementation
• ONNX parser

[codecov]

Codecov Report

Attention: Patch coverage is 97.66764% with 8 lines in your changes missing coverage. Please review.

Project coverage is 92.49%. Comparing base (04b82df) to head (de0030d).
Report is 3 commits behind head on develop.

Files with missing lines	Patch %	Lines
src/include/migraphx/op/sparse_attention.hpp	97.03%	7 Missing ⚠️
src/onnx/parse_sparse_attention.cpp	99.06%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #3866      +/-   ##
===========================================
+ Coverage    92.41%   92.49%   +0.07%     
===========================================
  Files          520      522       +2     
  Lines        22471    22814     +343     
===========================================
+ Hits         20766    21101     +335     
- Misses        1705     1713       +8     

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