CLI: improve feedback when running a Wasm module without exported functions

[Robbepop]

No description provided.

[paritytech-cicd-pr]

BENCHMARKS

	NATIVE			WASMTIME
BENCHMARK	MASTER	PR	DIFF	MASTER	PR	DIFF	WASMTIME OVERHEAD
execute/ bare_call_0	1.01ms	1.01ms	⚪ 0.04%	928.99µs	939.11µs	⚪ 0.74%	🟢 -7%
execute/ bare_call_0/typed	526.15µs	525.85µs	⚪ -0.06%	454.16µs	454.23µs	⚪ 0.00%	🟢 -14%
execute/ bare_call_1	1.06ms	1.06ms	⚪ 0.93%	1.19ms	1.23ms	🔴 2.73%	🟢 15%
execute/ bare_call_16	2.20ms	2.18ms	⚪ 0.25%	4.75ms	4.78ms	⚪ 0.82%	🔴 120%
execute/ bare_call_16/typed	1.53ms	1.53ms	⚪ -0.10%	2.37ms	2.38ms	⚪ 0.42%	🟡 56%
execute/ bare_call_1/typed	609.51µs	617.50µs	⚪ 3.23%	770.42µs	796.29µs	🔴 3.30%	🟢 29%
execute/ bare_call_4	1.18ms	1.20ms	⚪ 0.39%	1.95ms	1.97ms	⚪ 1.07%	🟡 64%
execute/ bare_call_4/typed	628.71µs	633.82µs	⚪ 0.64%	877.49µs	873.90µs	⚪ -0.45%	🟢 38%
execute/ br_table	621.51µs	670.64µs	⚪ 5.66%	947.38µs	944.49µs	⚪ -0.23%	🟢 41%
execute/ count_until	650.77µs	651.04µs	⚪ 0.08%	4.81ms	2.06ms	🟢 -57.10%	🔴 217%
execute/ factorial_iterative	310.27µs	305.17µs	🟢 -1.76%	860.31µs	863.64µs	⚪ 0.28%	🔴 183%
execute/ factorial_recursive	626.61µs	606.08µs	🟢 -3.24%	1.31ms	1.31ms	⚪ -0.22%	🔴 116%
execute/ fib_iterative	1.54ms	1.43ms	🟢 -7.20%	4.64ms	4.64ms	⚪ -0.01%	🔴 224%
execute/ fib_recursive	5.99ms	5.73ms	🟢 -4.18%	11.82ms	11.82ms	⚪ -0.09%	🔴 106%
execute/ global_bump	948.28µs	948.78µs	⚪ 0.05%	3.11ms	3.11ms	⚪ 0.15%	🔴 228%
execute/ global_const	716.37µs	716.70µs	⚪ 0.05%	2.36ms	2.36ms	⚪ -0.07%	🔴 229%
execute/ host_calls	28.90µs	28.61µs	⚪ -1.03%	42.26µs	42.96µs	🔴 1.71%	🟢 50%
execute/ memory_fill	1.28ms	1.28ms	⚪ -0.02%	4.10ms	4.10ms	⚪ 0.14%	🔴 221%
execute/ memory_sum	1.25ms	1.31ms	🔴 4.42%	4.12ms	4.12ms	⚪ 0.21%	🔴 215%
execute/ memory_vec_add	2.69ms	2.60ms	🟢 -3.50%	8.46ms	8.45ms	⚪ -0.19%	🔴 226%
execute/ recursive_is_even	1.12ms	1.11ms	⚪ -1.04%	2.14ms	2.13ms	⚪ -0.17%	🟡 92%
execute/ recursive_ok	145.17µs	150.32µs	🔴 3.46%	302.34µs	300.85µs	⚪ -0.47%	🟡 100%
execute/ recursive_scan	178.93µs	178.69µs	⚪ 0.06%	388.68µs	387.35µs	⚪ -0.46%	🔴 117%
execute/ recursive_trap	14.39µs	14.35µs	⚪ -0.12%	30.17µs	30.17µs	⚪ -0.02%	🔴 110%
execute/ regex_redux	542.93µs	542.04µs	⚪ -0.15%	1.52ms	1.53ms	⚪ 0.37%	🔴 182%
execute/ rev_complement	502.83µs	504.82µs	⚪ 0.47%	1.52ms	1.52ms	⚪ -0.26%	🔴 201%
execute/ tiny_keccak	375.47µs	382.53µs	⚪ 1.36%	1.25ms	1.26ms	⚪ 0.29%	🔴 229%
execute/ trunc_f2i	917.25µs	910.15µs	⚪ -0.81%	2.49ms	2.50ms	⚪ 0.19%	🔴 175%
instantiate/ wasm_kernel	61.18µs	56.97µs	🟢 -6.22%	76.86µs	101.36µs	🔴 30.42%	🟡 78%
translate/ erc1155	203.83µs	206.36µs	🔴 1.64%	405.03µs	402.75µs	⚪ -0.50%	🟡 95%
translate/ erc20	100.21µs	100.42µs	⚪ 0.52%	197.31µs	199.77µs	⚪ 1.06%	🟡 99%
translate/ erc721	143.42µs	145.17µs	⚪ 1.40%	288.50µs	288.17µs	⚪ 0.05%	🟡 99%
translate/ spidermonkey	0.00ns	0.00ns	⚪ 0.64%	0.00ns	0.00ns	⚪ -0.26%	🟢 0%
translate/ wasm_kernel	3.73ms	3.73ms	⚪ 0.24%	7.71ms	7.70ms	⚪ 0.02%	🔴 106%

Link to pipeline