[FEATURE SUPPORT] add gemm test script

[LoserCheems]

Summary

• Introduces benchmark tests for the gemm operation across multiple backends (Python, PyTorch, Triton, and Cute) to evaluate performance on different devices and data types.

Root Cause

• The need for performance comparison across various implementations of the gemm operation prompted the addition of these benchmarks.

Changes

• Added a new test suite for gemm benchmarks, including parameterized tests for different devices and data types.

Reproduction

• Run the benchmark tests using the provided test suite to compare performance across implementations.

Tests

• Added tests for the gemm operation benchmarks, confirming successful execution across supported backends.

Compatibility

• No migration concerns or backwards compatibility issues identified.

Checklist

• Linked issue provided [FEATURE REQUEST] gemm test coverage and fixtures #34
• Adds or updates tests
• Updates docs if needed
• No perf regressions