default build dir add `fir`
default build dir add `fir`

FIRHQ/fir-cli,jonesgithub/fir-cli,JeeLiu/fir-cli,noname007/fir-cli,agoodtest/fir-cli,yunheli/fir-cli,yunheli/fir-cli,shengwen1994/fir-cli,FIRHQ/fir-cli,agoodtest/fir-cli