feat: improve function signature of generator (#9)

* feat: improve function signature of generator

* fix ci

* update license head

* fix ci

Fix/miss next (#7)

* fix: c.Next()

* feature: add ctx log

feat: add request id middleware (#1)

* feat: add request id middleware

* docs: use LF for new line character

* style: run gofumpt to format code

* chore: add licenserc

* doc: add license of direct dependencies

* doc: add LICENSE file

* docs: add get request id example