Migrate to orjson

[itayfoT]

Hey,

To improve performance, we changed to use orjson

[dario-br]

Hi @itayfoT , could you please also remove the changes to the file ps_everywhere.py? And can you also share some performance tests that you did? @cvandeplas did some and initially performance wise orjson did not look that performant. The more data you can share there, the better it will help us to assess.