fixed errors.AsA implement to correct logic

add .justfile

json: optimize go json help utils

sync.Once add Reset() method

add embed package

split json module

just go mod tidy

add sync package

Merge pull request #36 from alimy/dependabot/go_modules/github.com/go…

…ccy/go-json-0.10.5

mod: bump github.com/goccy/go-json from 0.10.4 to 0.10.5

just retract v1.20.0 for go.mod