ls, cp, and find functionality from server to client via gRPC streaming with protobuf defined api
./client -op=ls -file=/ returns server listing of root i.e. ls -la /
./client -op=ls -file=/usr returns server /usr
./client -op=ls -file=/home/USER etc...
./client -op=cp -file=/etc/systemd/system.conf -dest=system.conf copy servers system.conf to current folder
./client -op=find -file=fileToFind return full path to fileToFind on server
./client -op=find -file=/fileToFind start search at root return full path to fileToFind on server
./client -op=find -file=/home/fileToFind start search at /home return full path to fileToFind on server