website: Use Docusaurus Frontmatter for badges #27885

Job	Run time
test-unittest	4m 16s
lint-golint	1m 23s
ci-outpost-mark	1s
build-container (proxy)	2m 56s
build-binary (proxy, linux, amd64)	1m 46s
build-container (ldap)	2m 18s
build-container (radius)	2m 30s
build-binary (proxy, linux, arm64)	1m 44s
build-container (rac)	2m 20s
build-binary (ldap, linux, amd64)	1m 49s
build-binary (ldap, linux, arm64)	1m 47s
build-binary (radius, linux, amd64)	1m 54s
build-binary (radius, linux, arm64)	1m 45s
build-binary (rac, linux, amd64)	2m 36s
build-binary (rac, linux, arm64)	1m 44s
	30m 49s

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