feat: minor API improvements #520

Job	Run time
search	5s
test (sdk/go/templates/default)	23s
test (sdk/go/examples/simple)	18s
test (sdk/go/examples/embedding)	26s
test (sdk/go/examples/textgeneration)	24s
test (sdk/go/examples/http)	23s
test (sdk/go/examples/postgresql)	17s
test (sdk/go/examples/collections)	23s
test (sdk/go/examples/neo4j)	15s
test (sdk/go/examples/classification)	15s
test (sdk/go/examples/graphql)	25s
test (sdk/go/examples/anthropic-functions)	15s
test (sdk/go/examples/vectors)	27s
test (sdk/go/examples/dgraph)	24s
test (sdk/go/examples/auth)	14s
test (sdk/go/examples/time)	23s
test (sdk/go/examples/mysql)	21s
test (sdk/go)	33s
test (lib/manifest)	24s
test (lib/wasmextractor)	14s
test (lib/metadata)	14s
test (runtime/languages/golang/testdata)	15s
test (runtime)	2m 1s
	9m 19s

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