feat: add `gnostats`, a node cluster data visualizer #4178

Job	Run time
setup	5s
Run Main (gnodev) / Go Build / generated	36s
Run Main (gnodev) / Go Linter / lint	1m 7s
Run Main (gnodev) / Go Test / test	1m 53s
Run Main (gnofaucet) / Go Build / generated	29s
Run Main (gnofaucet) / Go Linter / lint	58s
Run Main (gnofaucet) / Go Test / test	1m 9s
Run Main (gnokeykc) / Go Build / generated	29s
Run Main (gnokeykc) / Go Linter / lint	34s
Run Main (gnokeykc) / Go Test / test	1m 8s
Run Main (gnomd) / Go Build / generated	50s
Run Main (gnomd) / Go Linter / lint	1m 4s
Run Main (gnomd) / Go Test / test	1m 0s
Run Main (gnostats) / Go Build / generated	31s
Run Main (gnostats) / Go Linter / lint	33s
Run Main (gnostats) / Go Test / test	37s
	13m 3s

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