utils: adjust `similarity`, add suggestions from `subcmds` #699

Job	Run time
build-v-examples-with-gc-disabled (ubuntu-20.04, 11, 31)	3m 48s
build-v-examples-with-gc-disabled (ubuntu-20.04, 11, 33)	3m 56s
build-legacy-v-examples-as-apk-and-aab (ubuntu-20.04, 8, 31)	8m 46s
build-v-examples-as-apk-and-aab (ubuntu-20.04, 11, 31)	5m 6s
build-v-examples-with-gc-disabled (ubuntu-20.04, 15, 31)	3m 36s
build-legacy-v-examples-as-apk-and-aab (ubuntu-20.04, 8, 33)	7m 5s
build-v-examples-as-apk-and-aab (ubuntu-20.04, 11, 33)	5m 30s
build-v-examples-with-gc-disabled (ubuntu-20.04, 15, 33)	3m 50s
build-v-examples-as-apk-and-aab (ubuntu-20.04, 15, 31)	5m 1s
build-v-examples-with-gc-disabled (ubuntu-20.04, 20, 31)	3m 49s
build-v-examples-as-apk-and-aab (ubuntu-20.04, 15, 33)	5m 18s
build-v-examples-as-apk-and-aab (ubuntu-20.04, 20, 31)	5m 17s
build-v-examples-with-gc-disabled (ubuntu-20.04, 20, 33)	3m 45s
build-v-examples-as-apk-and-aab (ubuntu-20.04, 20, 33)	5m 13s
	1h 10m 0s

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