Add MNK padding, M = 0 support into grouped_gemm (#539)

* add mnk padding, support m=0

* clean code

* clean code

Co-authored-by: Rostyslav Geyyer <46627076+geyyer@users.noreply.github.com>
3 jobs for tutorial_hello_world in 0 seconds (queued for 112 minutes and 5 seconds)
Status Job ID Name Coverage
  Build
failed #3564
build

 
  Test
failed #3566
allowed to fail
code_quality

failed #3565
test

 
Name Stage Failure
failed
build Build There has been a timeout failure or the job got stuck. Check your timeout limits or try again
No job log
failed
test Test There has been a timeout failure or the job got stuck. Check your timeout limits or try again
No job log
failed
code_quality Test There has been a timeout failure or the job got stuck. Check your timeout limits or try again
No job log