perf: Add benches for parser and get_path

[b41sh]

parser benches

canada.json
jsonb	[4.6569 ms 4.6622 ms 4.6680 ms]
serde_json	[8.7727 ms 8.7911 ms 8.8115 ms]
json_deserializer	[4.5349 ms 4.5409 ms 4.5471 ms]
simd_json	[5.1894 ms 5.1993 ms 5.2100 ms]

citm_catalog.json
jsonb	[2.5120 ms 2.5162 ms 2.5206 ms]
serde_json	[4.0064 ms 4.0127 ms 4.0197 ms]
json_deserializer	[2.9674 ms 2.9717 ms 2.9761 ms]
simd_json	[2.1907 ms 2.1936 ms 2.1968 ms]

twitter.json
jsonb	[1.9177 ms 1.9210 ms 1.9245 ms]
serde_json	[2.1374 ms 2.1403 ms 2.1435 ms]
json_deserializer	[2.1390 ms 2.1418 ms 2.1448 ms]
simd_json	[708.68 µs 710.22 µs 711.88 µs]

get path benches

	jsonb	serde_json
canada->type	[91.082 ns 91.353 ns 91.623 ns]	[10.425 ms 10.447 ms 10.472 ms]
citm_catalog->areaNames->205705994	[176.80 ns 177.42 ns 178.07 ns]	[4.0597 ms 4.0674 ms 4.0759 ms]
citm_catalog->topicNames->324846100	[159.70 ns 160.09 ns 160.47 ns]	[4.1255 ms 4.1321 ms 4.1388 ms]
twitter->search_metadata->max_id_str	[141.68 ns 142.00 ns 142.28 ns]	[2.1449 ms 2.1493 ms 2.1541 ms]

Closes #28