website/integrations: add The Lounge (#11971) #160

Job	Run time
test-unittest	4m 54s
lint-golint	54s
ci-outpost-mark	1s
build-container (proxy)	2m 42s
build-binary (proxy, linux, amd64)	1m 59s
build-container (ldap)	2m 27s
build-binary (proxy, linux, arm64)	2m 7s
build-container (radius)	2m 22s
build-binary (ldap, linux, amd64)	1m 49s
build-container (rac)	2m 16s
build-binary (ldap, linux, arm64)	1m 49s
build-binary (radius, linux, amd64)	1m 52s
build-binary (radius, linux, arm64)	1m 56s
build-binary (rac, linux, amd64)	1m 44s
build-binary (rac, linux, arm64)	1m 53s
	30m 45s

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