add chatwork-cmd
update chatwork-cmd: default use api token is ~/.chatwork
not use command delete.
add group room list get command
save roomid logic
add: apicode and roomid not save mode (oneshot)
cmd path change
add: interactive mode and silent mode
interactive mode quit
change json type check
implement get-room
interactive mode prompt change: room id ->  room name
add README.md usage
update
update