Add support for stmatrix in the unit test HopperMatmulTest/HSH_NT_128BSwizzle

[protonu]

This demonstrates the use of stmatrix in a multi-tile hopper matmul.

[protonu]

Observations:

1. On running getBankConflictInfo, I see both cases (mma with and without a stmatrix) have zero bank conflicts. The codes I used was:

   KernelExecutor ke;
   auto launch_constraints = LaunchParams();
   ke.compile(
     &fusion,
     {inputs.first, inputs.second},
     launch_constraints,
     matmul_cparams);
   
   auto bank_conflict_info =
     getBankConflictInfo(ke.kernel(), launch_constraints);
   
   if (bank_conflict_info.empty()) {
   debug() << "===== No bank confliction =====" << std::endl;
   } else {
   debug() << "======= Bank confliction =======" << std::endl;
   for (auto info : bank_conflict_info) {
     debug() << "Expr: " << info.first->toString() << std::endl;
     auto conflict = info.second;
     if (conflict.first > 1) {
       debug() << "input conflict: " << conflict.first << " way, ";
     }
     if (conflict.second > 1) {
       debug() << "output conflict: " << conflict.second << " way";
     }
     debug() << std::endl;
   }
   debug() << "================================" << std::endl;
   }
   fusion.printKernel();

2. Performance sees a minor degradation:

Without stmatrix Time (%) Total Time (ns) Instances Avg (ns) Med (ns) Min (ns) Max (ns) StdDev (ns) Name

---

 36.8           156830          1  156830.0  156830.0    156830    156830          0.0  <unnamed>::nvfuser_none_f0_c0_r0_g0(<unnamed>::Tensor<<unnamed>::__half, (int)3, (int)3>, <unnamed>…
 23.1            98654          1   98654.0   98654.0     98654     98654          0.0  nvjet_hsh_256x128_64x4_1x2_h_bz_coopA_NTT

Where stmatrix was about 63%

With stmatrix this falls to about 59-60%

TODO: Use nsight to look at bank conflict data.