refine iref
imp fixed_buffer_io
imp contains algorithm
add missed changes of fixed_buffer_io imp
remove unused file
rename namespace lio to sio, mean serialization io
inprogress move to iref & iauto, build break
fixed InMemory and LocalFs
fix vfs.cpp
fix subvfs.cpp
1. add zip 2. add archive adaptor
read_map & write_map methods view_rd & view_wr return iauto insted of unique_ptr
remove redundant code