fix a bug: sender list

Signed-off-by: Manson Li <manson.li@matchstick.tv>
add plugin loader

Signed-off-by: Manson Li <manson.li@matchstick.tv>
integrate plugin

Signed-off-by: Manson Li <manson.li@matchstick.tv>
add build.sh

Signed-off-by: Manson Li <manson.li@matchstick.tv>
temp checkin

Signed-off-by: Manson Li <manson.li@matchstick.tv>
receiver ws ready

Signed-off-by: Manson Li <manson.li@matchstick.tv>
sender websocket ready

Signed-off-by: Manson Li <manson.li@matchstick.tv>
optimize plugin module

Signed-off-by: Manson Li <manson.li@matchstick.tv>
debug SSDP

Signed-off-by: Manson Li <manson.li@matchstick.tv>