Refactor: support both `requrie "itamae-plugin-recipe-rbenv"` and `requrie "itamae/plugin/recipe/rbenv"`
Refactor: support both `requrie "itamae-plugin-recipe-rbenv"` and `requrie "itamae/plugin/recipe/rbenv"`

dex1t/itamae-plugin-recipe-rbenv,k0kubun/itamae-plugin-recipe-rbenv