yi-hack-MStar 0.3.4

Add rtsp and snapshot links to the homepage
Restored chain h264grabber -> rRTSPServer from 0.3.1
Add rmm watchdog
Add scripts to cleanup sources
Update live555 to the last version
Update onvif_srvd to new feature of home assistant 0.110
Add @PieVo patch to unblock open action on audio fifo
Add mqtt retain params to configuration
Restore old trick to start buffer filling
Bump mqttv4 to the last version (move mq and add retains)
Convert (temporarily) audio stream to 8 KHz
Add ipc_multiplexer and ipc_read
Add reset to factory feature
Fix bug about swith on/off camera
Add support for multiple RTSP server binaries (with and without audio)
Improve load/save/fw_upgrade scripts
Add support for y23 model