feat(hub): API docs sidebar group with hub-proxied Swagger UIs #49

Job	Run time
Compose config validation (-f infra/open-pulse-stack/docker-compose.yml)	7s
Compose config validation (-f infra/open-pulse-stack/docker-compose.yml -f infra/open-pulse-stack...	5s
Compose config validation (-f infra/open-pulse-stack/docker-compose.yml -f infra/open-pulse-stack...	7s
	19s

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