Rewrite 1x1 convolutions to gemm #22154

Job	Run time
Check if image exists in registry	8s
cancel	2s
licensing	3m 19s
linux-fpga (ubuntu-20.04, debug)	2h 3m 9s
misspell	16s
pyflakes	3m 8s
linux (ubuntu-20.04, debug)	2h 4m 12s
linux (ubuntu-20.04, release)	1h 19m 41s
linux (ubuntu-20.04, codecov)	1h 16m 32s
Build image	0s
Build SLES image	0s
format	5m 41s
tidy	1h 29m 40s
cppcheck	1h 1m 17s
sles	25m 8s
	9h 52m 13s

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