Allow Linked Files in Platform Folders

[UweReisewitz]

My usage scenario is the following:

I have 2 implementations of an interface, one for Windows and another for Android, iOS and MacCatalyst. So the Windows implementation resides in Platforms\Windows.

To see the other implementation in a similar way, it would be helpful to put it e.g. in Platforms\Android and link this file into Platforms\iOS and Platforms\MacCatalyst. This would show that there is a specific implementation available on each platform and one would see that 3 platforms share the same code. Unfortunately this is not possible at the moment.

Currently I have found 2 workarounds which I both find wanting:

1. Have the file in a normal folder and use preprocessor directives (this is what I'm using at the moment) but now the project doesn't reflect the relation between the 2 implementaions.
2. Have a copy of the file in each folder. This could cause problems later because it does not show that it is the same code for 3 platforms.