Add support for RedisJSON 2.0 full JSONPath syntax

[gkorland]

Please notice all the commands can now get full jsonpath, i.e. dynamic paths that start with a $ sign.
As a result all the commands can now return multi parts of the JSON.
see: https://oss.redis.com/redisjson/commands/

[KromDaniel]

Hey, was bit off, I'll have a look, thanks for letting me know