`--template` option

[koba04]

Supporting templates that cover all use-cases is impossible so I'd like to add --template option.
--template option allows you to use other templates that create-kintone-plugin has.

--template option accepts a path to a template directory or a npm package name like the following.

create-kintone-plugin --template ./path/to/template/directory
// or 
create-kintone-plugin --template @koba04/kintone-plugin-template-babel