add release i386
add release i386

Signed-off-by: Tianling Shen <733d1739e44126f2ef7dbe9297aa5d4d3b0fb05f@immortalwrt.org>

zonyitoo/shadowsocks-rust,shadowsocks/shadowsocks-rust,shadowsocks/shadowsocks-rust,shadowsocks/shadowsocks-rust,shadowsocks/shadowsocks-rust