Cleanup bytecode constructor codegen

[Robbepop]

This disentangles the macro heavy code and makes it a bit more readable. A superior version would be to use proc. macros and automatically generate constructors for the Instruction enum, however, that also introduces a lot of complexity.

[paritytech-cicd-pr]

BENCHMARKS

	NATIVE			WASMTIME
BENCHMARK	MASTER	PR	DIFF	MASTER	PR	DIFF	WASMTIME OVERHEAD
execute/ br_table	1.59ms	1.63ms	🔴 2.60%	1.37ms	1.36ms	⚪ -0.60%	🟢 -16%
execute/ call/host/1	50.61µs	50.95µs	⚪ 0.68%	60.55µs	60.24µs	⚪ -0.51%	🟢 18%
execute/ call/rec	172.74µs	173.12µs	⚪ 0.22%	292.29µs	293.53µs	⚪ 0.42%	🟡 70%
execute/ count_until	5.54ms	5.56ms	⚪ 0.35%	7.24ms	7.23ms	⚪ -0.07%	🟢 30%
execute/ divrem	6.24ms	6.24ms	⚪ 0.13%	6.31ms	6.79ms	🔴 7.63%	🟢 9%
execute/ factorial/iter	258.53µs	262.59µs	🔴 1.57%	280.61µs	268.12µs	🟢 -4.45%	🟢 2%
execute/ factorial/rec	668.68µs	668.66µs	⚪ 0.00%	1.09ms	1.08ms	⚪ -0.64%	🟡 62%
execute/ fibonacci/iter	1.33ms	1.33ms	⚪ 0.11%	1.13ms	1.13ms	⚪ 0.04%	🟢 -15%
execute/ fibonacci/rec	5.79ms	5.82ms	⚪ 0.64%	10.69ms	10.90ms	🔴 2.02%	🟡 87%
execute/ fibonacci/tail	1.29ms	1.33ms	🔴 2.90%	3.47ms	3.95ms	🔴 13.72%	🔴 198%
execute/ fuse	7.07ms	7.07ms	⚪ 0.07%	11.16ms	11.15ms	⚪ -0.02%	🟡 58%
execute/ global/bump	1.32ms	1.32ms	⚪ 0.05%	1.45ms	1.62ms	🔴 11.53%	🟢 23%
execute/ global/get_const	498.85µs	480.11µs	⚪ -3.76%	726.49µs	726.50µs	⚪ 0.00%	🟡 51%
execute/ is_even/rec	1.09ms	1.09ms	⚪ 0.23%	1.81ms	1.81ms	⚪ 0.12%	🟡 66%
execute/ memory/fill_bytes	1.11ms	1.07ms	⚪ -3.93%	1.21ms	1.21ms	⚪ 0.03%	🟢 13%
execute/ memory/sum_bytes	1.04ms	1.03ms	⚪ -1.13%	1.43ms	1.38ms	🟢 -3.41%	🟢 34%
execute/ memory/vec_add	2.97ms	2.96ms	⚪ -0.13%	3.22ms	3.22ms	⚪ -0.06%	🟢 9%
execute/ recursive_scan	189.52µs	189.32µs	⚪ -0.10%	308.69µs	311.37µs	⚪ 0.87%	🟡 64%
execute/ recursive_trap	16.04µs	16.53µs	🔴 3.08%	27.60µs	28.10µs	🔴 1.80%	🟡 70%
execute/ regex_redux	581.82µs	586.18µs	⚪ 0.75%	973.81µs	972.83µs	⚪ -0.10%	🟡 66%
execute/ rev_complement	440.62µs	439.22µs	⚪ -0.32%	604.41µs	591.13µs	🟢 -2.20%	🟢 35%
execute/ tiny_keccak	350.69µs	350.29µs	⚪ -0.11%	316.86µs	316.91µs	⚪ 0.01%	🟢 -10%
execute/ trunc_f2i	631.63µs	634.62µs	⚪ 0.47%	930.17µs	931.41µs	⚪ 0.13%	🟢 47%
instantiate/ wasm_kernel	56.63µs	52.35µs	🟢 -7.55%	57.87µs	53.21µs	🟢 -8.06%	🟢 2%
overhead/ call/typed/0	1.23ms	1.23ms	⚪ 0.26%	853.78µs	865.50µs	🔴 1.37%	🟢 -30%
overhead/ call/typed/16	1.67ms	1.66ms	⚪ -0.26%	2.17ms	2.17ms	⚪ 0.38%	🟢 31%
overhead/ call/untyped/0	1.59ms	1.58ms	⚪ -1.02%	1.11ms	1.11ms	⚪ -0.53%	🟢 -30%
overhead/ call/untyped/16	2.42ms	2.44ms	⚪ 0.46%	3.96ms	3.99ms	⚪ 0.72%	🟡 64%
translate/ bz2/checked/eager/default	1.34ms	1.35ms	⚪ 0.48%	2.45ms	2.48ms	⚪ 1.22%	🟡 84%
translate/ bz2/checked/eager/fuel	1.45ms	1.45ms	⚪ 0.04%	2.65ms	2.69ms	🔴 1.42%	🟡 85%
translate/ bz2/checked/lazy-translation/default	547.06µs	545.82µs	⚪ -0.23%	950.94µs	952.42µs	⚪ 0.16%	🟡 74%
translate/ bz2/checked/lazy/default	36.25µs	37.15µs	🔴 2.51%	44.97µs	44.68µs	⚪ -0.65%	🟢 20%
translate/ bz2/unchecked/eager/default	1.10ms	1.12ms	⚪ 1.52%	1.91ms	1.91ms	⚪ 0.00%	🟡 70%
translate/ erc1155/checked/eager/default	282.80µs	281.37µs	⚪ -0.50%	478.02µs	482.84µs	⚪ 1.01%	🟡 72%
translate/ erc1155/checked/eager/fuel	300.20µs	302.55µs	⚪ 0.78%	512.75µs	519.29µs	🔴 1.27%	🟡 72%
translate/ erc1155/checked/lazy-translation/default	127.60µs	127.46µs	⚪ -0.11%	209.01µs	209.09µs	⚪ 0.04%	🟡 64%
translate/ erc1155/checked/lazy/default	25.80µs	25.92µs	⚪ 0.45%	32.43µs	32.06µs	⚪ -1.14%	🟢 24%
translate/ erc1155/unchecked/eager/default	232.00µs	235.09µs	🔴 1.33%	375.52µs	375.20µs	⚪ -0.08%	🟡 60%
translate/ erc20/checked/eager/default	137.78µs	137.09µs	⚪ -0.50%	227.95µs	232.81µs	🔴 2.13%	🟡 70%
translate/ erc20/checked/eager/fuel	145.52µs	145.28µs	⚪ -0.17%	242.11µs	244.92µs	⚪ 1.16%	🟡 69%
translate/ erc20/checked/lazy-translation/default	64.53µs	65.47µs	🔴 1.46%	105.90µs	106.27µs	⚪ 0.36%	🟡 62%
translate/ erc20/checked/lazy/default	18.82µs	18.97µs	⚪ 0.80%	24.49µs	24.37µs	⚪ -0.49%	🟢 28%
translate/ erc20/unchecked/eager/default	112.03µs	113.87µs	🔴 1.65%	178.23µs	179.42µs	⚪ 0.67%	🟡 58%
translate/ erc721/checked/eager/default	194.16µs	194.57µs	⚪ 0.21%	331.06µs	336.93µs	🔴 1.77%	🟡 73%
translate/ erc721/checked/eager/fuel	203.10µs	204.33µs	⚪ 0.61%	348.83µs	355.33µs	🔴 1.86%	🟡 74%
translate/ erc721/checked/lazy-translation/default	90.71µs	90.77µs	⚪ 0.06%	151.20µs	151.10µs	⚪ -0.07%	🟡 66%
translate/ erc721/checked/lazy/default	22.56µs	23.13µs	🔴 2.55%	28.56µs	28.76µs	⚪ 0.71%	🟢 24%
translate/ erc721/unchecked/eager/default	157.66µs	159.99µs	🔴 1.48%	254.31µs	254.78µs	⚪ 0.19%	🟡 59%
translate/ pulldown_cmark/checked/eager/default	3.61ms	3.64ms	⚪ 0.68%	6.22ms	6.28ms	⚪ 1.03%	🟡 73%
translate/ pulldown_cmark/checked/eager/fuel	3.90ms	3.91ms	⚪ 0.06%	6.70ms	6.79ms	🔴 1.23%	🟡 74%
translate/ pulldown_cmark/checked/lazy-translation/default	1.55ms	1.55ms	⚪ 0.16%	2.53ms	2.53ms	⚪ 0.07%	🟡 63%
translate/ pulldown_cmark/checked/lazy/default	245.57µs	256.38µs	🔴 4.40%	246.76µs	256.06µs	🔴 3.77%	🟢 -0%
translate/ pulldown_cmark/unchecked/eager/default	3.05ms	3.09ms	🔴 1.53%	4.91ms	4.93ms	⚪ 0.30%	🟡 59%
translate/ spidermonkey/checked/eager/default	77.16ms	77.33ms	⚪ 0.22%	134.82ms	136.31ms	⚪ 1.10%	🟡 76%
translate/ spidermonkey/checked/eager/fuel	83.21ms	83.53ms	⚪ 0.38%	145.66ms	147.83ms	🔴 1.49%	🟡 77%
translate/ spidermonkey/checked/lazy-translation/default	32.27ms	32.62ms	⚪ 1.09%	55.07ms	54.99ms	⚪ -0.14%	🟡 69%
translate/ spidermonkey/checked/lazy/default	3.21ms	3.25ms	⚪ 1.24%	3.77ms	3.78ms	⚪ 0.26%	🟢 16%
translate/ spidermonkey/unchecked/eager/default	64.39ms	65.01ms	⚪ 0.97%	106.39ms	106.95ms	⚪ 0.52%	🟡 65%
translate/ wasm_kernel/checked/eager/default	5.09ms	5.08ms	⚪ -0.30%	8.78ms	8.88ms	🔴 1.17%	🟡 75%
translate/ wasm_kernel/checked/eager/fuel	5.24ms	5.22ms	⚪ -0.47%	9.26ms	9.37ms	🔴 1.14%	🟡 80%
translate/ wasm_kernel/checked/lazy-translation/default	2.42ms	2.43ms	⚪ 0.45%	3.94ms	3.94ms	⚪ 0.16%	🟡 62%
translate/ wasm_kernel/checked/lazy/default	422.18µs	424.65µs	⚪ 0.59%	475.35µs	475.16µs	⚪ -0.04%	🟢 12%
translate/ wasm_kernel/unchecked/eager/default	4.14ms	4.19ms	⚪ 1.11%	6.76ms	7.01ms	🔴 3.59%	🟡 67%

Link to pipeline