Fuzz

Fuzz #321

Job	Run time
fuzz (parse_descriptor_priv)	2m 44s
fuzz (compile_taproot)	2m 36s
fuzz (compile_descriptor)	2m 46s
fuzz (roundtrip_miniscript_script_tap)	2m 35s
fuzz (roundtrip_miniscript_script)	2m 30s
fuzz (roundtrip_concrete)	2m 52s
fuzz (roundtrip_semantic)	2m 44s
fuzz (roundtrip_descriptor)	2m 33s
fuzz (roundtrip_miniscript_str)	2m 33s
fuzz (parse_descriptor_secret)	2m 39s
fuzz (regression_descriptor_parse)	3m 0s
fuzz (parse_descriptor)	3m 10s
verify-execution	15s
	32m 57s

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