Optimize DAG-CBOR map decode with key-intern cache and KnownHash insert

[MarshalX]

About hasher: https://nnethercote.github.io/2021/12/08/a-brutally-effective-hash-function-in-rust.html

[codspeed-hq]

Merging this PR will improve performance by 21.47%

⚠️ Different runtime environments detected

Some benchmarks with significant performance changes were compared across different runtime environments,
which may affect the accuracy of the results.

Open the report in CodSpeed to investigate

⚡ 14 improved benchmarks
✅ 178 untouched benchmarks

Performance Changes

	Mode	Benchmark	BASE	HEAD	Efficiency
⚡	Simulation	test_dag_cbor_decode_fixtures[dagpb_11unnamedlinks+data]	33.4 µs	27.8 µs	+20.06%
⚡	Simulation	test_dag_cbor_decode_fixtures[dagpb_4namedlinks+data]	23.7 µs	21.2 µs	+11.93%
⚡	Simulation	test_dag_cbor_decode_fixtures[dagpb_7unnamedlinks+data]	27.2 µs	23.7 µs	+15.06%
⚡	Simulation	test_dag_cbor_decode_fixtures[dagpb_Data_zero]	14.5 µs	13 µs	+11.13%
⚡	Simulation	test_dag_cbor_decode_fixtures[dagpb_empty]	13.5 µs	12.1 µs	+11.51%
⚡	Simulation	test_dag_cbor_decode_fixtures[garbage-03]	38.8 µs	34.6 µs	+12.28%
⚡	Simulation	test_dag_cbor_decode_fixtures[garbage-18]	40.1 µs	35.3 µs	+13.68%
⚡	Simulation	test_dag_cbor_decode_fixtures[garbage-19]	26.6 µs	23.8 µs	+11.64%
⚡	Simulation	test_dag_cbor_decode_fixtures[map-1_pair]	13.2 µs	12 µs	+10.47%
⚡	Simulation	test_dag_cbor_decode_fixtures[map-keysort]	18.2 µs	15.9 µs	+14.59%
⚡	Simulation	test_dag_cbor_decode_real_data[citm_catalog.json]	19.9 ms	14.4 ms	+38.74%
⚡	Simulation	test_dag_cbor_decode_real_data[github.json]	731.5 µs	494.4 µs	+47.96%
⚡	Simulation	test_dag_cbor_decode_real_data[twitter.json]	8.1 ms	5.2 ms	+54.19%
⚡	Simulation	test_decode_car	511.4 ms	367.5 ms	+39.18%

Tip

Curious why this is faster? Comment @codspeedbot explain why this is faster on this PR, or directly use the CodSpeed MCP with your agent.

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_{Comparing optimize-decode-key-intern-cache (f7b0694) with main (4ea29bb)}

[MarshalX]

Decoding 🚀