Implement bulk-memory Wasm proposal

[Robbepop]

Closes #364.

This PR also updates the Wasm spec testsuite to a much more recent version where bulk-memory´ and reference-typesare already included as stable components of the Wasm standard. However, sincewasmidoes not yet supportreference-types` that means that we had to expect failures for a subset of the Wasm spec testsuite tests temporarily.

We are going to merge this PR and immediately create a follow-up PR that implements the reference-types Wasm proposal in order to make those tests pass again.

[paritytech-cicd-pr]

BENCHMARKS

	NATIVE			WASMTIME
BENCHMARK	MASTER	PR	DIFF	MASTER	PR	DIFF	WASMTIME OVERHEAD
execute/ bare_call_0	1.34ms	1.33ms	⚪ -0.34%	1.10ms	1.10ms	⚪ -0.59%	🟢 -18%
execute/ bare_call_0/typed	1.02ms	1.02ms	⚪ -0.42%	746.59µs	754.96µs	⚪ 1.04%	🟢 -26%
execute/ bare_call_1	1.41ms	1.40ms	🔴 -0.68%	1.19ms	1.26ms	🔴 6.05%	🟢 -10%
execute/ bare_call_16	2.32ms	2.45ms	🔴 5.78%	4.24ms	4.25ms	🔴 0.28%	🟡 74%
execute/ bare_call_16/typed	1.56ms	1.94ms	🔴 24.65%	2.62ms	2.65ms	🔴 1.34%	🟢 37%
execute/ bare_call_1/typed	1.10ms	1.12ms	🔴 1.74%	1.07ms	1.14ms	🔴 7.46%	🟢 2%
execute/ bare_call_4	1.53ms	1.56ms	🔴 2.18%	1.78ms	1.89ms	🔴 6.32%	🟢 21%
execute/ bare_call_4/typed	1.09ms	1.13ms	🔴 3.70%	1.20ms	1.26ms	🔴 4.81%	🟢 11%
execute/ br_table	1.10ms	1.17ms	🔴 7.18%	1.36ms	1.32ms	🟢 -3.34%	🟢 13%
execute/ count_until	651.33µs	682.19µs	🔴 4.76%	2.40ms	2.09ms	🟢 -12.83%	🔴 206%
execute/ factorial_iterative	315.11µs	317.93µs	⚪ 0.94%	962.73µs	916.19µs	🟢 -4.89%	🔴 188%
execute/ factorial_recursive	626.46µs	630.06µs	⚪ 0.48%	1.26ms	1.31ms	🔴 4.13%	🔴 108%
execute/ fib_iterative	1.49ms	1.41ms	🟢 -5.40%	5.54ms	5.05ms	🟢 -9.01%	🔴 258%
execute/ fib_recursive	5.68ms	5.73ms	⚪ 1.12%	10.82ms	11.79ms	🔴 9.11%	🔴 106%
execute/ global_bump	949.15µs	1.04ms	🔴 10.12%	2.66ms	2.78ms	🔴 4.41%	🔴 166%
execute/ global_const	773.45µs	723.59µs	🟢 -8.72%	2.79ms	2.12ms	🟢 -24.02%	🔴 193%
execute/ host_calls	26.08µs	25.72µs	⚪ -0.74%	36.31µs	36.47µs	⚪ 0.81%	🟢 42%
execute/ memory_fill	1.22ms	1.24ms	🔴 1.45%	4.40ms	4.08ms	🟢 -7.24%	🔴 228%
execute/ memory_sum	1.18ms	1.26ms	🔴 6.80%	4.39ms	3.93ms	🟢 -10.42%	🔴 213%
execute/ memory_vec_add	2.42ms	2.45ms	🔴 1.92%	8.31ms	7.90ms	🟢 -4.90%	🔴 222%
execute/ recursive_is_even	1.16ms	1.14ms	⚪ -0.76%	2.26ms	2.19ms	🟢 -3.28%	🟡 92%
execute/ recursive_ok	142.19µs	144.36µs	🔴 1.71%	285.89µs	299.36µs	🔴 4.87%	🔴 107%
execute/ recursive_scan	174.03µs	175.32µs	⚪ 0.73%	356.39µs	389.94µs	🔴 9.55%	🔴 122%
execute/ recursive_trap	13.80µs	14.34µs	🔴 3.85%	28.86µs	29.35µs	🔴 1.66%	🔴 105%
execute/ regex_redux	523.81µs	525.00µs	⚪ 0.25%	1.40ms	1.40ms	⚪ 0.41%	🔴 167%
execute/ rev_complement	481.13µs	473.05µs	🟢 -1.72%	1.46ms	1.44ms	🟢 -1.82%	🔴 204%
execute/ tiny_keccak	335.56µs	332.23µs	⚪ -0.88%	1.22ms	1.17ms	🟢 -4.26%	🔴 252%
execute/ trunc_f2i	694.53µs	701.70µs	⚪ 1.07%	2.14ms	2.18ms	⚪ 1.76%	🔴 211%
instantiate/ wasm_kernel	64.98µs	63.63µs	⚪ -2.68%	83.45µs	82.60µs	⚪ -0.63%	🟢 30%
translate/ erc1155	205.67µs	208.18µs	⚪ 1.17%	371.00µs	383.47µs	🔴 3.49%	🟡 84%
translate/ erc20	101.56µs	103.07µs	⚪ 1.07%	180.84µs	188.25µs	🔴 4.40%	🟡 83%
translate/ erc721	148.81µs	147.50µs	⚪ 0.41%	263.90µs	272.57µs	🔴 3.33%	🟡 85%
translate/ spidermonkey	0.00ns	0.00ns	🔴 1.33%	0.00ns	0.00ns	🔴 3.24%	🟢 0%
translate/ wasm_kernel	3.75ms	3.77ms	⚪ 0.70%	7.18ms	7.36ms	🔴 2.22%	🟡 95%

Link to pipeline