c/clang/symg:refine config usage

chore/llcppg/types/types.go

@@ -16,6 +16,10 @@
 
 package types
 
+import (
+	"github.com/goplus/llgo/c/cjson"
+)
+
 // Config represents a configuration for the llcppg tool.
 type Config struct {
 	Name         string   `json:"name"`
@@ -26,6 +30,11 @@ type Config struct {
 	JSONPath     string   `json:"jsonPath"`
 }
 
+type Conf struct {
+	*cjson.JSON
+	*Config
+}
+
 type CPPSymbol struct {
 	Symbol string `json:"symbol"`
 	Type   string `json:"type"`