feat: custom json marshaling implementation, replace json and yaml library (#89)

* chore: replace gopkg.in/yaml.v3 vs goccy/go-yaml; replace encoding/json with bytedance/sonic

* fix: yaml unmarshal panic

* feat: custom json marshaler implementation

* chore: fix import and err marshal handling

---------

Co-authored-by: yusing <yusing@6uo.me>

internal/gperr/base.go

@@ -4,7 +4,7 @@ import (
 	"errors"
 	"fmt"
 
-	"encoding/json"
+	"github.com/yusing/go-proxy/pkg/json"
 )
 
 // baseError is an immutable wrapper around an error.
@@ -49,6 +49,6 @@ func (err *baseError) Error() string {
 	return err.Err.Error()
 }
 
-func (err *baseError) MarshalJSON() ([]byte, error) {
-	return json.Marshal(err.Err)
+func (err *baseError) MarshalJSONTo(buf []byte) []byte {
+	return json.MarshalTo(err.Err, buf)
 }