sweep: add sweep macro #895

Job	Run time
Lint Bazel files	6s
//sram:top_mix_cts	3m 9s
Generate configs	7s
tag_array_64x184_generate_abstract	3m 55s
Smoketests	8m 54s
tag_array_64x184_report	2m 26s
open //sram:top_mix	3m 23s
lb_32x128_generate_abstract	3m 53s
Local flow - clean setup	6m 53s
open tag_array_64x184	2m 8s
lb_32x128_test_generate_abstract	2m 14s
open L1MetadataArray	4m 20s
L1MetadataArray_generate_abstract	5m 10s
open subpackage:L1MetadataArray	4m 26s
data_2048x8_generate_abstract	2m 19s
open subpackage:tag_array_64x184	2m 10s
regfile_128x65_floorplan	2m 18s
subpackage:L1MetadataArray_generate_abstract	5m 4s
subpackage:tag_array_64x184_generate_abstract	2m 6s
Local flow - preinstalled orfs	6m 50s
	1h 11m 51s

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