message: chore(ci): Add circleci status badge
diff: # kintone-dts-gen
  +[![CircleCI](https://circleci.com/gh/kintone/dts-gen/tree/master.svg?style=svg)](https://circleci.com/gh/kintone/dts-gen/tree/master)
  +
  Type definition for kintone customize and
  Type definition generation tool from kintone form settings.
  