manifest.json should be in each templates

[koba04]

Currently, manifest.json is generated by https://github.com/kintone/create-plugin/blob/master/src/manifest.ts, which is tightly coupled with the minimum template so it makes adding another template harder.
So I'd like to move manifest.json into each templates.

Is it possible only to use lodash template as well as https://github.com/kintone/create-plugin/blob/master/templates/minimum/package.json.tmpl?