Metal MSM GPU Acceleration Support

[ElusAegis]

This PR introduces support for Metal-based MSM GPU acceleration, leveraging the mopro GPU acceleration fork.

Key Highlights:

• Performance Gains:

  • Expected performance improvements of approximately 25% for log 17 instance sizes.
  • Gains increase to 35% or more for log 20+ instance sizes.
  • Detailed benchmarking results are available in the mopro GPU acceleration fork.

• Selective Activation:

  • The GPU acceleration is feature gated and further will only be enabled only for MSM operations with an instance size of log 17 or greater.
  • A user warning is displayed to inform about the activation threshold and expected benefits.

Notes:

This enhancement provides a significant boost for large-scale MSM computations, by collectively utilizing Metal's GPU resources with CPU resources on supported devices.