Using sockaddr instead of sockaddr_in

[maxsharabayko]

/srt_socket_group.cpp.o
In file included from /srt-xtransmit/xtransmit/misc.hpp:11,
                 from /srt-xtransmit/xtransmit/srt_socket_group.cpp:13:
In member function ‘void xtransmit::netaddr_any::set(const sockaddr*)’,
    inlined from ‘xtransmit::netaddr_any::netaddr_any(const sockaddr*, xtransmit::netaddr_any::len_t)’ at /srt-xtransmit/xtransmit/netaddr_any.hpp:136:16,
    inlined from ‘static int xtransmit::socket::srt_group::listen_callback_fn(void*, SRTSOCKET, int, const sockaddr*, const char*)’ at /srt-xtransmit/xtransmit/srt_socket_group.cpp:442:40:
/srt-xtransmit/xtransmit/netaddr_any.hpp:153:19: warning: ‘void* memcpy(void*, const void*, size_t)’ reading 28 bytes from a region of size 16 [-Wstringop-overflow=]
  153 |             memcpy((&sin6), source, sizeof sin6);
      |             ~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

[maxsharabayko]

Fixed by #92