Add metadata shared library #213

Job	Run time
search	3s
lint (lib/metadata)	13s
lint (lib/wasmextractor)	13s
lint (lib/manifest)	18s
lint (sdk/go)	13s
lint (sdk/go/examples/graphql)	15s
lint (sdk/go/examples/simple)	18s
lint (sdk/go/examples/auth)	17s
lint (sdk/go/examples/postgresql)	16s
lint (sdk/go/examples/dgraph)	21s
lint (sdk/go/examples/embedding)	19s
lint (sdk/go/examples/vectors)	18s
lint (sdk/go/examples/collections)	16s
lint (sdk/go/examples/classification)	15s
lint (sdk/go/examples/textgeneration)	15s
lint (sdk/go/examples/http)	17s
lint (sdk/go/templates/default)	21s
lint (runtime)	21s
lint (runtime/languages/golang/testdata)	16s
	5m 5s

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