Added tool rssi.py
Added tool rssi.py

rssi.py is a RSSI test used for production test

phelpsw/SiK,RFDesign/SiK,tridge/SiK,Serveurperso/SiK,phelpsw/SiK,phelpsw/SiK,nusepo/SiK,LorenzMeier/SiK,phelpsw/SiK,LorenzMeier/SiK,RFDesign/SiK,Dronecode/SiK,RFDesign/SiK,RFDesign/SiK,tridge/SiK,phelpsw/SiK,nusepo/SiK,Serveurperso/SiK,nusepo/SiK,tridge/SiK,Dronecode/SiK,LorenzMeier/SiK,Serveurperso/SiK,tridge/SiK,Serveurperso/SiK,nusepo/SiK,Dronecode/SiK,Dronecode/SiK,RFDesign/SiK,LorenzMeier/SiK,tridge/SiK,nusepo/SiK