implement macro with annotation

- func_anno(x,y,func_name,comment)
- func_begin_anno(x,y,func_name,comment)
- local_func_anno(x,func_name,comment)
- local_func_begin_anno(x,func_name,comment)
add sample code for annotation macro
Merge pull request #3 from cad-san/implement-annotation-macro

Implement annotation macro