feat(examples): add p/demo/avl/list #7494

Job	Run time
setup	6s
Run Main (github-bot) / Go Build / generated	11s
Run Main (github-bot) / Go Linter / lint	31s
Run Main (github-bot) / Go Test / test	35s
Run Main (gnodev) / Go Build / generated	11s
Run Main (gnodev) / Go Test / test	1m 16s
Run Main (gnofaucet) / Go Build / generated	7s
Run Main (gnodev) / Go Linter / lint	46s
Run Main (gnofaucet) / Go Test / test	36s
Run Main (gnofaucet) / Go Linter / lint	31s
Run Main (gnogenesis) / Go Build / generated	7s
Run Main (gnogenesis) / Go Linter / lint	37s
Run Main (gnogenesis) / Go Test / test	46s
Run Main (gnohealth) / Go Build / generated	10s
Run Main (gnohealth) / Go Linter / lint	27s
Run Main (gnohealth) / Go Test / test	37s
Run Main (gnokeykc) / Go Build / generated	7s
Run Main (gnokeykc) / Go Linter / lint	47s
Run Main (gnokeykc) / Go Test / test	46s
Run Main (gnomd) / Go Build / generated	8s
Run Main (gnomd) / Go Linter / lint	30s
Run Main (gnomd) / Go Test / test	24s
Run Main (gnomigrate) / Go Build / generated	11s
Run Main (gnomigrate) / Go Linter / lint	36s
Run Main (gnomigrate) / Go Test / test	38s
	11m 41s

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