New configuration option to manage empty remarks.md

appsettings.json

If keepEmptyFile is true (by default), the tool automatically creates an empty remarks.md for each package in the repository; otherwise, remarks.md will be deleted if empty.

  "repository": {
    "remarks.md": {
      "keepEmptyFile": true|false
    }
  }

Update nuget.org-readme-template.txt and npmjs.com-readme-template.txt to remove Remarks section from the package readme.md, if remarks are empty

{%- if Remarks -%}
Remarks
-----------
{{Remarks}}

{%- endif -%}

The described changes should be applied manually to the existing configuration, if necessary.