Fuzz

Fuzz #280

Job	Run time
fuzz (compile_descriptor)	4m 30s
fuzz (compile_taproot)	4m 44s
fuzz (parse_descriptor)	4m 44s
fuzz (parse_descriptor_priv)	4m 47s
fuzz (parse_descriptor_secret)	4m 47s
fuzz (regression_descriptor_parse)	4m 37s
fuzz (roundtrip_concrete)	4m 29s
fuzz (roundtrip_descriptor)	4m 37s
fuzz (roundtrip_miniscript_script)	4m 32s
fuzz (roundtrip_miniscript_script_tap)	4m 28s
fuzz (roundtrip_miniscript_str)	5m 2s
fuzz (roundtrip_semantic)	4m 29s
verify-execution	4s
	55m 50s

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