Proper Batching Support

[avik-pal]

For realistic ML applications, we need to support batching natively.

• Linear Complementarity Problems
  • Forward Solve: supported via NonlinearReformulation
    • x0 is batched
      • Implemented
      • Tested
    • Generic Case M (3D AbstractArray) and q are batched (For x0 batching we should be able to reformulate the problem as this case)
      • Implemented
      • Tested
  • Adjoint
    • x0 is batched
      • Implemented
      • Tested
    • M and q is batched
      • Implemented
      • Tested
• Linear Complementarity Systems
• Mixed Complementarity Problems
  • Forward Solve: supported via NonlinearReformulation
    • Implemented
    • Tested
  • Adjoint
    • x0 is batched
      • Implemented
      • Tested