feature: use sonic library to replace encoding/json

[claymega]

Analyzing the time consumed in get_payload, we see that it is concentrated in json-decode, so we are going to optimize json-decode.

• use sonic library to replace encoding/json;

Be careful: sonic(encoding/json) is used not only in get_payload, but also in any other place where json parsing is used.

Code modification actually happen in replace encoding/json with sonic

[claymega]

The json-decode time did not reach the target time consumption, which only shows that json-decode cannot be placed in the sequencing process. so close the PR