[Feature request] `querly init` command

[pocke]

$ querly init
`querly.yaml` is generated!

$ cat querly.yaml
rules:
  # - id: com.example.some_rule
  #   pattern: 'some_method_call()'
...

Some lint tool has init command to generate configuration file. For example: ESLint
And, querly requires a configuration file. So, I guess initialise command is useful for first-time user.

WDYT?