Adds visibility for `Expose.Checks` config setting for proxies.
1. Adds an 'Exposed Path' tab to the proxy detail page to show the user information on exposed paths.
2. If the users has exposed their healthchecks we also add this information to the Service detail page for this proxy (only for http2 and gRPC checks)
This gives more prominence to 'Service Instances' as opposed to 'Services'. It also begins to surface Connect related 'nouns' such as 'Proxies' and 'Upstreams' and begins to interconnect them giving more visibility to operators.
Various smaller changes:
1. Move healthcheck-status component to healthcheck-output
2. Create a new healthcheck-status component for showing the number of
checks plus its icon
3. Create a new healthcheck-info component to group multiple statuses
plus a different view if there are no checks
4. Componentize tag-list
John Cowen