BENCH: Add basic benchmarks for scalar indexing and assignment (#16786)
BENCH: Add basic benchmarks for scalar indexing and assignment (#16786)

* BENCH: Add basic benchmarks for scalar indexing and assignment
numpy/numpy,seberg/numpy,jakirkham/numpy,charris/numpy,rgommers/numpy,anntzer/numpy,madphysicist/numpy,charris/numpy,pbrod/numpy,anntzer/numpy,pbrod/numpy,jakirkham/numpy,anntzer/numpy,madphysicist/numpy,mhvk/numpy,pbrod/numpy,jakirkham/numpy,numpy/numpy,simongibbons/numpy,grlee77/numpy,rgommers/numpy,mattip/numpy,seberg/numpy,grlee77/numpy,mattip/numpy,mhvk/numpy,rgommers/numpy,endolith/numpy,seberg/numpy,simongibbons/numpy,anntzer/numpy,numpy/numpy,madphysicist/numpy,grlee77/numpy,mattip/numpy,mhvk/numpy,numpy/numpy,pdebuyl/numpy,charris/numpy,madphysicist/numpy,endolith/numpy,pdebuyl/numpy,grlee77/numpy,charris/numpy,pdebuyl/numpy,mhvk/numpy,endolith/numpy,endolith/numpy,grlee77/numpy,seberg/numpy,simongibbons/numpy,jakirkham/numpy,jakirkham/numpy,rgommers/numpy,madphysicist/numpy,simongibbons/numpy,pbrod/numpy,mhvk/numpy,mattip/numpy,simongibbons/numpy,pdebuyl/numpy,pbrod/numpy