Run tests

Bump jsbt helpers 0.3.0. Add build:release script. #30

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Run time

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Job	Run time
jsbt v0.3.0 / Bun	1m 13s
jsbt v0.3.0 / Deno	22m 16s
jsbt v0.3.0 / Lint	2m 23s
jsbt v0.3.0 / Measure coverage	4m 55s
jsbt v0.3.0 / Node v18.20.5	1m 30s
jsbt v0.3.0 / Node v20.18.1	1m 36s
jsbt v0.3.0 / Node v22.13.0	1m 25s
	35m 18s