clang use fn -> parser use fn

Author: luoliwoshang

_xtool/internal/clang/_wrap/wrap.cpp _xtool/internal/parser/_wrap/wrap.cpp_xtool/internal/clang/_wrap/wrap.cpp renamed to _xtool/internal/parser/_wrap/wrap.cpp

@@ -1,5 +1,5 @@
 // NOTE(zzy):temp define in current directory, need to be removed when support libclang at llpkg
-package clang
+package parser
 
 import (
 	_ "unsafe"