feat: add generate command

[suzuki-shunsuke]

Close #182

$ aqua g

Select the package interactively.

  direnv (standard)                                                                                                                                                               
  consul (standard)                                                                                                                                                               
  conftest (standard)                                                                                                                                                             
  suzuki-shunsuke/cmdx (standard)                                                                                                                                                 
  suzuki-shunsuke/circleci-config-merge (standard)                                                                                                                                
  circleci-cli (standard)                                                                                                                                                         
  suzuki-shunsuke/ci-info (standard)                                                                                                                                              
  suzuki-shunsuke/akoi (standard)                                                                                                                                                 
  golangci-lint (local)                                                                                                                                                           
> cmdx (inline)                                                                                                                                                                   
  47/47                                                                                                                                                                           
>                                                                                                                                                                                 

If the selected package type is github_release, select the package version interactively.

  v1.37.0                                                                                                                                                                         
  v1.37.1                                                                                                                                                                         
  v1.38.0                                                                                                                                                                         
  v1.39.0                                                                                                                                                                         
  v1.40.0                                                                                                                                                                         
  v1.40.1                                                                                                                                                                         
  v1.41.0                                                                                                                                                                         
  v1.41.1                                                                                                                                                                         
> v1.42.0                                                                                                                                                                         
  30/30                                                                                                                                                                           
>                                                                                                                                                                                 

After selecting the package and the package version, the configuration is outputted.

$ aqua g
- name: golangci-lint
  registry: local
  version: v1.42.0

The interactive UI is implemented with ktr0731/go-fuzzyfinder.