Add a benchmark for jsoniter-scala

[plokhotnyuk]

@piotrrzysko Thanks for porting of simdjson to Java!

This PR adds ParseAndSelectBenchmark for jsoniter-scala.

Results are quite competitive on my laptop (Intel® Core™ i7-11800H CPU @ 2.3GHz (max 4.6GHz), RAM 64Gb DDR4-3200, Ubuntu 23.04 (Linux 6.2) using OpenJDK 64-Bit Server VM Temurin-20.0.1+9:

Benchmark                                                                   Mode  Cnt     Score    Error  Units
ParseAndSelectBenchmark.countUniqueUsersWithDefaultProfile_fastjson        thrpt    5   916.814 ± 24.732  ops/s
ParseAndSelectBenchmark.countUniqueUsersWithDefaultProfile_jackson         thrpt    5   784.450 ±  1.973  ops/s
ParseAndSelectBenchmark.countUniqueUsersWithDefaultProfile_jsoniter        thrpt    5   602.781 ± 10.898  ops/s
ParseAndSelectBenchmark.countUniqueUsersWithDefaultProfile_jsoniter_scala  thrpt    5  2393.011 ± 28.473  ops/s
ParseAndSelectBenchmark.countUniqueUsersWithDefaultProfile_simdjson        thrpt    5  2295.253 ± 64.139  ops/s
ParseAndSelectBenchmark.countUniqueUsersWithDefaultProfile_simdjsonPadded  thrpt    5  2460.363 ± 42.452  ops/s

While it doesn't full validation of skipped values according to JSON spec, but it does just enough minimal validation to allow safe skipping of not needed keys and values.

[piotrrzysko]

Thanks! I'll try to take a look at this today.

[Dieken]

@piotrrzysko Could you update the result in README.md to include jsoniter-scala?