Option to copy file relative path

There are several file menu items for a single file:

• Copy Full Path
• Copy Path and Line Number
• Copy File Name

These is also a use case for having option "Copy Relative Path", which would copy file's path relative to the project it belongs to:  if there is a policy to #include headers bu using names relative to project root. I.e. it would be handy to find proper include file by quick open (Ctrl+K), and then copy it's relative path to be pasted as #include argument

Depending on project's policies, it might be also to define arbitrary include roots. If this information can be gathered from Code Model, it would be useful to have a sub-menu to "Copy Relative Path to ..." > ... detected include root directories ...