add web_socket.ipp

Signed-off-by: Jack <jack.wgm@gmail.com>
update vcproject file

Signed-off-by: Jack <jack.wgm@gmail.com>
improve error_codec.hpp for avws.

Signed-off-by: Jack <jack.wgm@gmail.com>
add resolve.hpp for avws.
add connect.hpp for avws
move resolve_host&connect_host function to resolve.hpp&connect.hpp
update vcproject file
update copyright email address