Rewrite 1x1 convolutions to gemm #22079

Job	Run time
Check if image exists in registry	8s
cancel	5s
linux (ubuntu-20.04, debug)	44m 10s
licensing	4m 31s
linux (ubuntu-20.04, release)	10m 26s
linux (ubuntu-20.04, codecov)	12m 54s
linux-fpga (ubuntu-20.04, debug)	45m 49s
misspell	20s
pyflakes	6m 3s
Build SLES image	0s
Build image	0s
tidy	8m 20s
format	5m 47s
sles	6m 29s
cppcheck	59m 8s
	3h 24m 10s

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